Lecture 6 Examples
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| Program | Demonstrates |
|---|---|
| account.cpp | Demonstration of a C++ structure which illustrates a function as a member. |
| account2.cpp | Demonstration of a C++ structure whose definition is in the file: theAccount.h and whose member functions are in the file theAccount_h.cpp |
| theAccount.h | This file contains the definition of the structure circle. The functions for the structure are place in the source file: circle_H.cpp |
| theAccount_h.cpp | This file contains the member functions for the structure circle that are contained in the header file: circle.h. This file should be a source file in the project. |
| CLOCK1.CPP | Demonstration of a C++ structure which illustrates a function as a member |
| DATESTRC.CPP | This program seeks a date and tells what day of the week it is. |
| ed.cpp | Demonstrates that errors may occur in a program in which two enumerators of an enumerated data type have the same integral values. |
| ENUM1.CPP | A demonstration of enumerated data types |
| ENUM2.CPP | A program to test assignment the use of pointers with enumerators and instances of enumerated data types. |
| ENUM3.CPP | A program to test assignment of integers to an enumerated data type and to perform integral arithmetic on the enumerated instances. |
| ENUM4.CPP | A program to test whether enumerated data types can have enumerators using the same name. |
| ENUM5.CPP | A program to test whether enumerated data types can have be used for I/O. |
| ENUM6.CPP. | A program to test enumerated data type which are used at both input and output of a function. |
| invoices.cpp | This program processes invoices. |
| Design files for invoice.cpp
| These files are used for the Design Phase of the program: invoices.cpp. |
| invoices2.cpp | This is a modification of the program: invoices.cpp. |
| Design files for invoices2.cpp Sample data: inventory_test.txt UML of the structure: inventory UML of the structure: items Structure chart: sc_invoices2 Pseudo code: pc_invoices2 | These files are used for the Design Phase of the program: invoices2.cpp. |
| PTRSTRC.CPP | Demonstration of a C++ structure with pointers to unnamed instances. |
| STRUCT1.CPP | Demonstration of structure's features in C++. |
| STRUCT2.CPP | This program illustrates a struct definition, struct variable definition, struct assignment, and the manipulation of struct members. |
| STRUC3.CPP | This program illustrates an anonymous structure |
| STRUCT4.CPP | This program illustrates an anonymous structure |
| STUDENTGRADES.CPP | This program demonstrates the use of arrays of instances of a structure. |
| STUDENTGRADES2.cpp | This program demonstrates the use of a separate header file that contains the definition of a structure. It needs quizzes.h |
| QUIZZES.H | This header file is to be included into the program studentgrades2.cpp. It contains the definition of the structure: Quiz. |
| theClock.cpp | Demonstrates a timer and how to keep data at the same place on the screen. It uses the system date and time to begin the clock. |
| thedate.h | Contains the definition of the class date that can be used in many different examples. |
| THE_DATE.CPP | The program has the date structure with member functions. |
| TYPEDEF1.CPP | A program to test whether typedef can have be used for I/O. |
Open table as spreadsheet |
// program_id account2.cpp // author Don Voils // date_written 08/03/2006 // // description Demonstration of a C++ structure // which illustrates a function as a member. // It is similar to account.cpp except the // structure: Account is stored in its own // files. // // #include<iostream> #include<iomanip> using namespace std; #include "theAccount.h" void main() { cout << fixed << setprecision(2); Account myAccount; float theAmount; cout << "What was the balance of the account when it started? "; cin >> theAmount; myAccount.settheBalance(theAmount); cout << "What is the amount of the deposit? "; cin >> theAmount; myAccount.doDeposit(theAmount); cout << "What is the amount of the withdrawal? "; cin >> theAmount; myAccount.doWithdrawal(theAmount); cout << "The current balance is $" << myAccount.gettheBalance(); cout << endl << endl; char resp; cout << endl << endl << "Continue? "; cin >> resp; cout << endl << endl; } // program_id account.cpp // author Don Voils // date_written 08/03/2006 // // description Demonstration of a C++ structure // which illustrates a function as a member. // // #include<iostream> #include<iomanip> using namespace std; struct Account { float theBalance; void settheBalance(float); float gettheBalance(); void doDeposit(float); void doWithdrawal(float); }; void Account::settheBalance(float theAmount) { theBalance = theAmount; } float Account::gettheBalance() { return theBalance; } void Account::doDeposit(float theAmount) { theBalance += theAmount; } void Account::doWithdrawal(float theAmount) { theBalance -= theAmount; } void main() { cout << fixed << setprecision(2); Account myAccount; float theAmount; cout << "What was the balance of the account when it started? "; cin >> theAmount; myAccount.settheBalance(theAmount); cout << "What is the amount of the deposit? "; cin >> theAmount; myAccount.doDeposit(theAmount); cout << "What is the amount of the withdrawal? "; cin >> theAmount; myAccount.doWithdrawal(theAmount); cout << "The current balance is $" << myAccount.gettheBalance(); cout << endl << endl; char resp; cout << endl << endl << "Continue? "; cin >> resp; cout << endl << endl; } // program_id clock1.cpp // // author Don Voils // date_written 08/03/2006 // // description Demonstration of a C++ structure // which illustrates a function as // a member. // // Note: putch() and kbhit() had to be changed to _putch and _kbhit() // in Visual Studio .NET 2005 because of security reason. // #include<iostream> #include<conio.h> using namespace std; char backspace; struct block { char spacer[2]; }spacer_zero={"0"},spacer_blank={""}; struct time { int hours, minutes, seconds; void start_clock(); void tick_clock(); void display_clock(); }; void time::start_clock() { char mark; cout << "Example: hh:mm:ss"<< endl << endl << "Use a 24 hour clock" << endl << endl << "What is the time in hours, minutes and seconds?"; cin >> hours >> mark >> minutes >> mark >> seconds; } void time::display_clock() { long counter; block hours_zero, minutes_zero, seconds_zero; if (hours<=9) hours_zero=spacer_zero; else hours_zero=spacer_blank; if (minutes<=9) minutes_zero=spacer_zero; else minutes_zero=spacer_blank; if (seconds<=9) seconds_zero=spacer_zero; else seconds_zero=spacer_blank; for (counter=1;counter<=8;++counter) _putch(backspace); for (counter=1;counter<=8;++counter) _putch(''); for (counter=1;counter<=8;++counter) _putch(backspace); cout << hours_zero.spacer << hours << ':' << minutes_zero.spacer << minutes << ':' << seconds_zero.spacer << seconds; } void time::tick_clock() { ++seconds; if (seconds >=60) { seconds -= 60; ++minutes; } if (minutes >=60) { minutes -= 60; ++hours; } if (hours >=24) { hours = 0; } } void main() { unsigned long counter; time day1; backspace = '\b'; for(counter=1;counter<=5000;++counter) cout << endl; cout << flush; day1.start_clock(); for (counter=1;counter<=5000;++counter) cout << endl; cout << flush; while(!_kbhit()) { day1.tick_clock(); day1.display_clock(); for(counter=1;counter <= 450000000;++counter); } } // program_id datestrc.cpp // author Don Voils // date_written 08/03/2006 // // program description This program seeks a // date and tells what day // of the week it is. // // Formula must be adjusted for dates before 11/24/34. // #include<iostream> #include<string> using namespace std; // USER DEFINED DATA TYPES // typedef int COUNTER; struct date { long month, day, year; void set_date(); void find_day_of_week_for(); }; // FUNCTIONAL PROTOTYPES // long days_between(date a_date); long days_since(date a_date); long f(date a_date); long g(date a_date); void clear_screen(); bool incorrect_date(date a_date); long days_in_month(date a_date); bool is_leap_year(date a_date); void main() { date today_s_date; clear_screen(); today_s_date.set_date(); today_s_date.find_day_of_week_for(); char resp; cout << endl << endl << "Continue? "; cin >> resp; cout << endl << endl << endl; } void date::set_date() { date a_date; char dash; int theCount = 0; do { a_date.month = 0L; a_date.day = 0L; a_date.year = 0L; if(theCount==0) cout << endl << endl << "FINDING THE DAY OF THE WEEK" << endl << endl; else cout << endl << endl <<"Error in entering date. Please try again. " << endl << endl; month = 0L; day = 0L; year = 0L; cout << "What is the date? MM/DD/YY "; cin >> month >> dash >> day >> dash >> year; if(year<10) year = year + 2000L; else if(year < 100) year = year + 1900L; a_date.month = month; a_date.day = day; a_date.year = year; ++theCount; }while(incorrect_date(a_date)); } void date::find_day_of_week_for() { date a_date; int number; a_date.month=month; a_date.day=day; a_date.year=year; string day_name[7]= {"Saturday", "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday"}; string month_name[13]={"","January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"}; number = (int)(days_between(a_date) % 7L); cout << endl << endl << month_name[month] << " " << day << ", " << year << " was a " << day_name[number] << endl << endl; } long days_between(date day) { date t_date; t_date.month=11L; t_date.day=24L; t_date.year=1934L; long number = days_since(day) - days_since(t_date); return(number); } long days_since(date a_date) { long number = 1461L*f(a_date)/4L + 153L*g(a_date)/5L + a_date.day; return(number); } long f(date a_date) { long number = (a_date.month<=2L) ? a_date.year - 1L : a_date.year; return(number); } long g(date a_date) { long number = (a_date.month<=2L) ? a_date.month + 13L : a_date.month + 1L; return(number); } void clear_screen() { for(COUNTER index=1;index<=25;++index) cout << endl; } bool incorrect_date(date a_date) { bool bad_date; if (((a_date.month>=1L) && (a_date.month<=12L)) && ((a_date.day>=1L) && (a_date.day<=days_in_month(a_date)))) bad_date = false; else bad_date = true; return(bad_date); } long days_in_month(date a_date) { int upper_limit; long days_in_month[] = {0L, 31L, 28L, 31L, 30L, 31L, 30L, 31L, 31L, 30L, 31L,30L, 31L}; if (a_date.month != 2L) upper_limit = days_in_month[a_date.month]; else if (is_leap_year(a_date)) upper_limit = 29L; else upper_limit = days_in_month[a_date.month]; return (upper_limit); } bool is_leap_year(date a_date) { bool a_leap_year; if (((a_date.year%4L == 0L) && (a_date.year%100L != 0L)) || (a_date.year%400L == 0L)) a_leap_year = true; else a_leap_year = false; return(a_leap_year); } // program_id ed.cpp // written_by don voils // date_written 8/12/2006 // description This program demonstrates that errors may // occur in a program in which two enumerators // of an enumerated data type have the same // integral values. // #include<iostream> using namespace std; enum colors {green, blue, red, orange=2}; void main() { colors ed, don; ed = red; don = orange; if(ed == orange) cout << "ed is orange." << endl; else cout << "ed is red." << endl; if(don == red) cout << "don is red." << endl; else cout << "don is orange." << endl; for(colors index = green; index < orange; index = static_cast<colors>(static_cast<int>(index) + 1)) { switch(index) { case green: cout << "index is green."<< endl << endl; case blue: cout << "index is blue."<< endl << endl; // Notice this line is commented // out because there would be two // cases with the same value: // case red: // cout << "index is red."<< endl << endl; case orange: cout << "index is orange." << endl << endl; default: cout << "index is not a color. " << endl << endl; } } } // program_id enum1.cpp // // author don voils // date_written 08/31/2006 // // program descriptsion A demonstration of enumerated data types // #include<iostream> using namespace std; enum Boolean {FALSE, TRUE}; void main(void) { float score; Boolean scoreFlag; for(short index = 1;index <= 25; ++index) cout << endl; cout << "What was the score? "; cin >> score; if (score>100) scoreFlag = TRUE; else scoreFlag = FALSE; if (scoreFlag) cout << endl << endl << "The goal has been met."; else cout << endl << endl << "The goal has not been met."; cout << endl << endl; char resp; cout << endl << endl << "Continue? "; cin >> resp; cout << endl << endl; } // program_id enum2.cpp // author don voils // date_written 08/31/2006 // // program description A program to test assignment // the use of pointers with // enumerators and instances of // enumerated data types. // #include<iostream> using namespace std; enum Suit {CLUB, SPADE, HEART, DIAMOND}; void main() { Suit card1Type; Suit *cardPointer; card1Type = SPADE; // The following line will cause an error. // // cardPointer = &SPADE; cardPointer = &card1Type; cout << "The card is a " << card1Type << " and is at location " << cardPointer << endl << endl << endl; char resp; cout << endl << endl << "Continue? "; cin >> resp; cout << endl << endl; } // program_id enum3.cpp // author don voils // date_written 08/31/2006 // // program description A program to test assignment // of integers to an enumerated // data type and to perform // integral arithmetic on the // enumerated instances. // #include<iostream> using namespace std; enum Colors {BLUE, RED, YELLOW, GREEN}; void main(void) { Colors carColor, truckColor = BLUE; // Notice that if you remove any of the following comments // the program will not compile. Arithmetic with enumerators // is no longer allowed. // // carColor = 3; // cout << endl << "The car's color is " << carColor; // carColor = truckColor + RED; // cout << endl << "The car's color is " << carColor; // carColor = truckColor + 1; // cout << endl << "The car's color is " << carColor; // carColor = truckColor - 2; // cout << endl << "The car's color is " << carColor; char resp; cout << endl << endl << "Continue? "; cin >> resp; cout << endl << endl; } // program_id enum4.cpp // author don voils // date_written 08/31/2006 // // program description A program to test whether enumerated data // types can have enumerators using the same // name. // #include<iostream> using namespace std; // This program should not compile because the names used as // enumerators below are the same in two different enumerated data types. // enum Color {BLUE, RED, YELLOW, GREEN}; enum Shades {BLUE, RED, YELLOW, GREEN}; enum Style {TRUCK, COUPS, FOURDOOR, WAGON}; void main(void) { Shades carColor; Shades truckColor = BLUE; Style vehicle; carColor = truckColor; cout << "The car color is " << carColor << endl; vehicle = truckColor; cout << "The vehicle shade is " << vehicle << endl; char resp; cout << endl << endl << "Continue? "; cin >> resp; cout << endl << endl; } // program_id enum5.cpp // // author don voils // date_written 08/31/2006 // // program description A program to test whether enumerated data // types can have be used for I/O. // #include<iostream> using namespace std; enum {BLUE, RED, YELLOW, GREEN}; enum Boolean {FALSE, TRUE}; void main() { int vehicle = RED; Boolean closeQuarter = TRUE; cout << "The vehicle shade is " << vehicle << endl; // // The following code will not compile. // cout << "Should we close the quarter? (0=NO, 1=YES) "; // cin >> closeQuarter; if (closeQuarter) cout << endl << "Closing quarter!"; else cout << endl << "Not closing quarter now!"; char resp; cout << endl << endl << "Continue? "; cin >> resp; cout << endl << endl; } // program_id enum6.cpp // author don voils // date_written 10/16/2006 // // program description A program to test enumerated // data type which are used at // both input and output of a function. // #include<iostream> using namespace std; enum Colors {BLACK=1, RED, YELLOW, GREEN, BLUE}; Colors basicColor(Colors theCar); void main() { Colors myCar; for(myCar = BLACK ;myCar <= BLUE; myCar = static_cast<Colors> (static_cast<int>(myCar) + 1)) { basicColor(myCar); } cout << "My car is no longer one of the basic colors." << endl; cout << endl << endl; char resp; cout << endl << endl << "Continue? "; cin >> resp; cout << endl << endl; } Colors basicColor(Colors theCar) { switch(theCar) { case 1: cout << "My car is black." << endl; break; case 2: cout << "My car is red." << endl; break; case 3: cout << "My car is yellow." << endl; break; case 4: cout << "My car is green." << endl; break; case 5: cout << "My car is blue." << endl; break; default: cout << "My car is not one of the basic colors." << endl; break; } return theCar; } 1212 Thing1 12.54 1531 Thing2 54.23 4532 Thing3 242.45 5432 Thing4 51.33 // program_id inventory // written_by don voils // date_written 3/2/2006 // description This file contains the UML for the structure: inventory. // // 
// program-id invoices2.cpp // written-by don voils // date-written 1/21/2006 // // description This program is a modification of the program: invoices.cpp // This program is menu driven and adds the features that // permits the user to add and delete items from the inventory // as well as saving the inventory to disk with it ends. // #include<iostream> #include<fstream> #include<iomanip> #include<string> using namespace std; // This structure will store data from the // file inventoryText.txt and any changes during // the program execution. // struct inventory { long itemNumber; string itemName; double unitPrice; }; // This structure will store data about the // customer invoices. // struct items { inventory itemOrdered; int numberOrdered; }; // The function prototypes // void loadInventory(inventory inventoryItems[],short &inventoryNumber); void saveInventory(inventory inventoryItems[],short inventoryNumber); void addInventory(inventory inventoryItems[],short &inventoryNumber); void deleteInventory(inventory inventoryItems[],short inventoryNumber); void processCustomer(inventory inventoryItems[],short &inventoryNumber); void loadInvoice(inventory inventoryItems[],short &inventoryNumber, items invoiceItems[],short &numberItems); void showInvoice(string customerName,string customerAddress, items invoiceItems[],short numberItems); void displayTableHeading(string customerName,string customerAddress); void displayInvoice(items invoiceItems[],short numberItems); void clearScreen(); void main() { char resp; short menuItem; short inventoryNumber = 0; bool continueProgram = true; inventory inventoryItems[200]; loadInventory(inventoryItems,inventoryNumber); do { clearScreen(); cout << " Menu" << endl << endl; cout << " 1. Add Inventory Items" << endl; cout << " 2. Delete Inventory Items" << endl; cout << " 3. Enter and Display Customer Invoice" << endl; cout << " 4. End Program" << endl << endl; cout << endl << "Which option? "; cin >>menuItem; switch(menuItem) { case 1: clearScreen(); addInventory(inventoryItems,inventoryNumber); break; case 2: clearScreen(); deleteInventory(inventoryItems,inventoryNumber); break; case 3: clearScreen(); processCustomer(inventoryItems,inventoryNumber); break; case 4: clearScreen(); saveInventory(inventoryItems,inventoryNumber); continueProgram = false; break; default: cout << "Wrong menu option" << endl; cout << "Continue? (y/n)"; cin.get(resp).get(); } }while(continueProgram); } // This function stores the data contained in the file inventoryText.txt // into the array theInventory[] // void loadInventory(inventory inventoryItems[],short &inventoryNumber) { ifstream inFile("inventory.txt"); if(!inFile) { cout << endl << "The file did not open"; exit(1); } inFile >> inventoryItems[inventoryNumber].itemNumber; while(inFile) { inFile >> inventoryItems[inventoryNumber].itemName; inFile >> inventoryItems[inventoryNumber].unitPrice; ++inventoryNumber; inFile >> inventoryItems[inventoryNumber].itemNumber; } } void saveInventory(inventory inventoryItems[],short inventoryNumber) { ofstream outFile("inventory.txt"); if(!outFile) { cout << endl << "The file did not open"; exit(1); } for(int index = 0;index < inventoryNumber;++index) if(inventoryItems[index].itemNumber!=0) { outFile << inventoryItems[index].itemNumber << endl; outFile << inventoryItems[index].itemName << endl; outFile << inventoryItems[index].unitPrice << endl; } } // This function permits the entry of addtional inventory // items into the array inventoryItems[]. // void addInventory(inventory inventoryItems[],short &inventoryNumber) { char resp; bool notThere = true; long itemNumber; clearScreen(); if(inventoryNumber < 200) { cout << endl << "What is the item number of the item being added? "; cin >> itemNumber; if(itemNumber<1000) { cout << endl << "That is not an acceptable item number." << endl; notThere = false; cout << endl << "Continue? (y/n)"; cin.get(resp).get(resp); } for(int index = 0; index < inventoryNumber;++index) { if(itemNumber==inventoryItems[index].itemNumber) { cout << endl << "That inventory item number is already on record." << endl; cout << endl << "Continue? (y/n)"; cin.get(resp).get(resp); notThere = false; } } if(notThere) { cin.get(); inventoryItems[inventoryNumber].itemNumber = itemNumber; cout << endl << "What is the item name? "; getline(cin,inventoryItems[inventoryNumber].itemName); cout << endl << "What is the unit price? "; cin >> inventoryItems[inventoryNumber].unitPrice; ++inventoryNumber; } } else { cout << endl << "There is no more room to add to the inventory." << endl; cout << endl << "Continue? (y/n)"; cin.get(resp).get(); } } // This function permits the user to delete inventory items // from the array inventoryItems[]. // void deleteInventory(inventory inventoryItems[],short inventoryNumber) { char resp; bool notThere = true; long itemNumber; cout << endl << "What is the item number of the item being deleted? "; cin >> itemNumber; if(itemNumber<1000) { cout << endl << "That is not an acceptable item number." << endl; notThere = false; cout << endl << "Continue? y/n)"; cin >> resp; } for(int index = 0; index < inventoryNumber;++index) { if(itemNumber==inventoryItems[index].itemNumber) { inventoryItems[index].itemNumber = 0; cout << endl << "That inventory item number is being deleted." << endl; cout << endl << "Continue? (y/n)"; cin >> resp; notThere = false; } } if(notThere) { cout << endl << "There was no such item in the inventory." << endl; cout << endl << "Continue? y/n)"; cin >> resp; } } // The function processes the entry and displaying of // customer information and data about the items // purchased and then permits the invoice to be displayed // on the screen. // void processCustomer(inventory inventoryItems[],short &inventoryNumber) { string resp; short numberItems = 0; string customerName; string customerAddress; items invoiceItems[10]; clearScreen(); cin.get(); cout << "What is the customer's name? "; getline(cin,customerName); cout << endl << "What is the customer's address? "; getline(cin,customerAddress); cout << endl; cout << endl; loadInvoice(inventoryItems,inventoryNumber,invoiceItems,numberItems); showInvoice(customerName,customerAddress,invoiceItems,numberItems); cout << endl << "Continue? "; cin >> resp; } void showInvoice(string customerName,string customerAddress, items invoiceItems[],short numberItems) { clearScreen(); displayTableHeading(customerName,customerAddress); displayInvoice(invoiceItems,numberItems); } // This function permit the entry of items purchased by // a user. // void loadInvoice(inventory inventoryItems[],short &inventoryNumber, items invoiceItems[],short &numberItems) { clearScreen(); char resp; long itemNumber; long deletedItem = 0; short number; bool itemNotThere; for(short index=0;index < 10;++index) { do { cout << endl << "What is the item's number? "; cin >> itemNumber; itemNotThere = true; if(deletedItem == itemNumber) cout << "That item is not in the inventory" << endl << endl; else { for(short counter = 0; counter < inventoryNumber; ++counter) { if(inventoryItems[counter].itemNumber==itemNumber) { cout << endl << "How many of those items do you want? "; cin >> number; invoiceItems[numberItems].itemOrdered.itemNumber = inventoryItems[counter].itemNumber; invoiceItems[numberItems].itemOrdered.itemName = inventoryItems[counter].itemName; invoiceItems[numberItems].itemOrdered.unitPrice = inventoryItems[counter].unitPrice; invoiceItems[numberItems].numberOrdered = number; ++numberItems; itemNotThere = false; clearScreen(); } } } if(itemNotThere) cout << endl << "That item is not in the inventory" << endl; if(numberItems < 10) { cout << endl << "Do you want to enter another item?"; cin >> resp; if(resp=='N' || resp=='n') break; clearScreen(); } }while(resp!='n' && resp!= 'N'); if(resp=='N' || resp=='n') break; } } // This function displays the heading of the customer invoice. // void displayTableHeading(string customerName,string customerAddress) { cout << left << setw(12) << "Name: " << customerName << endl; cout << left << setw(12) << "Address: " << customerAddress << endl << endl; cout << left << setw(12) << "Item Number" << left << setw(12) << "Item Name" << left << setw(15) << "Unit Price" << left << setw(12) << "# Ordered" << left << setw(12) << "Item Amount" << endl; } // This function displays the body of the customer invoice. // void displayInvoice(items invoiceItems[],short numberItems) { double totalInvoice = 0.00; double amount; for(short index = 0; index < numberItems; ++index) { cout << fixed << setprecision(2); amount = invoiceItems[index].itemOrdered.unitPrice * invoiceItems[index].numberOrdered; cout << left << setw(12) << invoiceItems[index].itemOrdered.itemNumber << left << setw(12) << invoiceItems[index].itemOrdered.itemName << right << "$" << setw(12) << invoiceItems[index].itemOrdered.unitPrice << right << setw(12) << invoiceItems[index].numberOrdered << " $" << setw(12)<< amount << endl; totalInvoice += amount; } cout << endl << right << setw(38) << "Invoice total $ " << right << setw(25) << totalInvoice; } // This function clears the screen. // void clearScreen() { for(short index = 0; index < 50; ++index) cout << endl; } // program-id invoices.cpp // written-by don voils // date-written 8/23/2006 // // description This program processes invoices // #include<iostream> #include<fstream> #include<iomanip> #include<string> using namespace std; // This data type stores inventory items. // struct inventory { long itemNumber; string itemName; double unitPrice; }; // This data type store invoice items. // struct items { inventory itemOrdered; int numberOrdered; }; // These are the function prototypes. // void loadInventory(inventory inventoryItems[],short &inventoryNumber); void loadInvoice(inventory inventoryItems[],short &inventoryNumber, items invoiceItems[],short &numberItems); void displayTableHeading(string customerName,string customerAddress); void displayInvoice(items invoiceItems[],short numberItems); void clearScreen(); void main() { char resp; short inventoryNumber = 0; inventory inventoryItems[200]; loadInventory(inventoryItems,inventoryNumber); string customerName; string customerAddress; items invoiceItems[10]; do { cout << "What is the customer's name? "; getline(cin,customerName) ; cout << endl << "What is the customer's address? "; getline(cin,customerAddress); short numberItems = 0; cout << endl; loadInvoice(inventoryItems,inventoryNumber,invoiceItems,numberItems); clearScreen(); displayTableHeading(customerName,customerAddress); displayInvoice(invoiceItems,numberItems); cout << endl << endl << "Process another customer? "; cin.get(resp).get(resp).get(); clearScreen(); }while(resp=='Y' || resp=='y'); cout << endl << endl; } // This function loads the inventory from the disk. // void loadInventory(inventory theInventory[],short &inventoryNumber) { ifstream inFile("inventory.txt"); if(!inFile) { cout << "The file did not open"; exit(1); } inFile >> theInventory[inventoryNumber].itemNumber; while(inFile) { inFile >> theInventory[inventoryNumber].itemName; inFile >> theInventory[inventoryNumber].unitPrice; ++inventoryNumber; inFile >> theInventory[inventoryNumber].itemNumber; } } // This function loads invoice data for a specific customer. // void loadInvoice(inventory inventoryItems[],short &inventoryNumber, items invoiceItems[],short &numberItems) { clearScreen(); char resp; long itemNumber; //short numberOrdered = 0; long deletedItem = 0; short number; bool itemNotThere; for(short index=0;index < 10;++index) { do { cout << endl << "What is the item's number? "; cin >> itemNumber; itemNotThere = true; if(deletedItem == itemNumber) cout << "That item is not in the inventory" << endl << endl; else { for(short counter = 0; counter < inventoryNumber; ++counter) { if(inventoryItems[counter].itemNumber==itemNumber) { cout << endl << "How many of those items do you want? "; cin >> number; invoiceItems[numberItems].itemOrdered.itemNumber = inventoryItems[counter].itemNumber; invoiceItems[numberItems].itemOrdered.itemName = inventoryItems[counter].itemName; invoiceItems[numberItems].itemOrdered.unitPrice = inventoryItems[counter].unitPrice; invoiceItems[numberItems].numberOrdered = number; ++numberItems; itemNotThere = false; clearScreen(); } } } if(itemNotThere) cout << endl << "That item is not in the inventory" << endl; if(numberItems < 10) { cout << endl << "Do you want to enter another item?"; cin >> resp; if(resp=='N' || resp=='n') break; clearScreen(); } }while(resp!='n' && resp!= 'N'); if(resp=='N' || resp=='n') break; } } // This function displays the table heading to display the // invoices for the customer. // void displayTableHeading(string customerName,string customerAddress) { cout << left << setw(12) << "Name: " << customerName << endl; cout << left << setw(12) << "Address: " << customerAddress << endl << endl; cout << left << setw(12) << "Item Number" << left << setw(12) << "Item Name" << left << setw(15) << "Unit Price" << left << setw(12) << "# Ordered" << left << setw(12) << "Item Amount" << endl; } // This function display the table body for the invoice // being displayed. // void displayInvoice(items theInvoice[],short numberOrdered) { double totalInvoice = 0.00; double amount; for(short index = 0; index < numberOrdered; ++index) { cout << fixed << setprecision(2); amount = theInvoice[index].itemOrdered.unitPrice * theInvoice[index].numberOrdered; cout << left << setw(12) << theInvoice[index].itemOrdered.itemNumber << left << setw(12) << theInvoice[index].itemOrdered.itemName << right << "$" << setw(12) << theInvoice[index].itemOrdered.unitPrice << right << setw(12) << theInvoice[index].numberOrdered << " $" << setw(12)<< amount << endl; totalInvoice += amount; } cout << endl << right << setw(38) << "Invoice total $ " << right << setw(25) << totalInvoice; } // This function clears the screen. // void clearScreen() { for(short index = 0; index < 50; ++index) cout << endl; } // program_id: items // written_by: don voils // date_written: 3/2/2006 // description: This file contains the UML for the structure: items. // // 
// program_id pc_invoices2 // written_by don voils // date_written 3/2/2006 // // Description This file contains the pseudo code for // the program: invoices2.cpp // Invoices2 Set inventoryNumber = 0 Process loadInventory(inventoryItems[],&inventoryNumber) DO Set continueProgram to True Display menu options: 1. Add Inventory Items 2. Delete Inventory Items 3. Process Invoice 4. End Program Which option? Receive resp CASE OF resp '1': Process addInventory(inventoryItems[],&inventoryNumber) '2': Process deleteInventory(inventoryItems[],inventoryNumber) '3': Process processCustomers(inventoryItems[],&inventoryNumber) '4': Process saveInventory(inventoryItems[],inventoryNumber) Set continueProgram to False END CASE WHILE(continueProgram = True) End loadInventory(inventoryItems[],&inventoryNumber) Open inventoryFile Read inventoryFile and Store in inventoryItems[inventoryNumber].itemNumber DOWHILE(invoiceFile not empty and inventoryNumber < maximumInventoryItems) Read inventoryFile and Store in inventoryItems[inventoryNumber].itemName Read inventoryFile and Store in inventoryItems[inventoryNumber].unitPrice Set inventoryNumber = inventoryNumber + 1 Read inventoryFile and Store in inventoryItems[inventoryNumber].itemNumber ENDDO Return saveInventory(inventoryItems[],inventoryNumber) Open inventory.txt FOR index FROM 0 TO inventoryNumber - 1 IF inventoryItems[index].itemNumber NOT EQUAL TO 0 SAVE inventoryItems[index].itemNumber TO inventoryFile SAVE inventoryItems[index].itemName TO inventoryFile SAVE inventoryItems[index].unitPrice TO inventoryFile ENDIF ENDFOR Return addInventory(inventoryItems[],&inventoryNumber) Set notThere to True IF inventoryNumber < 200 THEN Request and Receive itemNumber IF(itemNumber < 1000) THEN Display error message Set notThere to False ENDIF FOR index FROM 0 TO inventoryNumber - 1 IF itemNumber = inventoryItems[index].itemNumber THEN Display error message Set notThere to false ENDIF ENDFOR IF notThere is True Store itemNumber to inventoryItems[inventoryNumber].itemNumber Request and Receive itemName Store itemName to inventoryItems[inventoryNumber].itemName Request and Receive unitPrice Store unitPrice to inventoryItems[inventoryNumber].unitPrice Set inventoryNumber = inventoryNumber + 1 ENDIF ELSE DISPLAY the inventory has no more room in it. ENDIF Return deleteInventory(inventoryItems[],inventoryNumber) Set notThere to True Request and Receive itemNumber to Delete IF itemNumber < 1000 THEN Display error message Set notThere to false ENDIF FOR index FROM 0 TO inventoryNumber - 1 IF itemNumber = inventoryItems[index].itemNumber THEN Set inventoryItems[index].itemNumber to 0 Display confirmation message ENDIF ENDFOR IF notThere = True THEN Display Error message that the item number was not in the inventory. ENDIF Return processCustomers(inventoryItems[],&inventoryNumber) Request and Receive customerName and customerAddress Set numberItems = 0 Process loadInvoice(inventoryItems[],&inventoryNumber, invoiceItems[],&numberItems) Process displayInvoice(inventoryItems[],inventoryNumber, invoiceItems[],numberItems) Return loadInvoice(inventoryItems[],&inventoryNumber,invoiceItems[],&numberItems) Set deletedItem = 0 FOR index FROM 0 TO 9 DO Request and Receive itemNumber Set itemNotThere to True IF deleteItem = itemNumber THEN Display error message ELSE FOR counter FROM 0 to inventoryNumber IF(itemNumber = inventoryItems[index].itemNumber)THEN invoiceItems[numberItems].itemOrdered.itemNumber = inventoryItems[index].itenNumber invoiceItems[numberItems].itemOrdered.itemName = inventoryItems[index].itemName invoiceItems[numberItems].itemOrdered.unitprice = inventoryItems[index].unitPrice Request and Receive invoiceItems[numberItems].numberOrdered Set numberItems = numberItems + 1 Set notThere = false; ENDIF ENDFOR ENDIF IF notThere = true THEN Display error message ENDIF IF numberItems < 10 THEN Request and Receive whether anotherItem ENDIF ENDWHILE(anotherItem is true) IF anotherItem is false THEN Leave module ENDIF ENDFOR Return displayInvoice(inventoryItems[],inventoryNumber, invoiceItems[],numberItems) Process displayTableHeading(customerName,customerAddress) Process displayInvoice(invoiceItems[],numberItems) Return displayTableHeading(customerName,customerAddress) Display customerName Display customerAddress Display in columns "Item Number", "Item Name", "Unit Price", "Number Ordered", "Item Total" Return showInvoice(invoiceItems[],numberItems) Set invoiceTotal = 0.00 FOR index from 0 to numberItems - 1 Display in columns invoiceItems[index].itemOrdered.itemNumber, invoiceItems[index].itemOrdered.itemName, invoiceItems[index].itemOrdered.unitprice, invoiceItems[index].numberOrdered invoiceItems[index].numberOrdered * invoiceItems[].unitprice Set invoiceTotal = invoiceTotal + invoiceItems[index].numberOrdered * invoiceItems[index].unitprice ENDFOR Display in column invoiceTotal Return // program_id pc_invoices // written_by don voils // date_written 3/2/2006 // description This file contains the pseudo code for the // program: invoices.cpp // Invoices Set inventoryNumber = 0 Process loadInventory(inventoryItems[],inventoryNumber); do Request and Receive customerName and customerAddress Set numberItems = 0 Process loadInvoice(inventoryItems[],inventoryNumber, invoiceItems[],numberItems) Process displayTableHeading(customerName,customerAddress) Process displayInvoice(invoiceItems[],numberItems); Request and Receive whether another invoice while(another invoice) End loadInventory(inventoryItems[],&inventoryNumber) Set maximumInventorItems = 200 Open inventoryFile Read inventoryFile and Store in inventoryItems[inventoryNumber].itemNumber DOWHILE(invoiceFile not empty and inventoryNumber < maximumInventoryItems) Read inventoryFile and Store in inventoryItems[inventoryNumber].itemName Read inventoryFile and Store in inventoryItems[inventoryNumber].unitPrice Set inventoryNumber = inventoryNumber + 1 Read inventoryFile and Store in inventoryItems[inventoryNumber].itemNumber ENDDO Return loadInvoice(inventoryItems[],&inventoryNumber,invoiceItems[],&numberItems) Set maximumNumberItems = 10 do Request and Receive itemNumber Set notThere = true; for index from 0 to inventoryNumber - 1 if(itemNumber = inventoryItems[index].itemNumber)then invoiceItems[numberItems].itemOrdered.itemNumber = inventoryItems[index].itenNumber invoiceItems[numberItems].itemOrdered.itemName = inventoryItems[index].itemName invoiceItems[numberItems].itemOrdered.unitprice = inventoryItems[index].unitPrice Request and Receive invoiceItems[numberItems].numberOrdered Set notThere = false; endif endfor if(notThere)then Display error message else Set numberItems = numberItems + 1 endif Request and Receive whether anotherItem while(anotherItem and numberItems < maximumNumberItems Return displayTableHeading(customerName,customerAddress) Display customerName Display customerAddress Display in columns "Item Number", "Item Name", "Unit Price", "Number Ordered", "Item Amount" Return displayInvoice(invoiceItems[],numberItems) Set totalInvoice = 0.00 for index from 0 to numberItems - 1 Display in columns invoiceItems[index].itemOrdered.itemNumber, invoiceItems[index].itemOrdered.itemName, invoiceItems[index].itemOrdered.unitprice, invoiceItems[index].numberOrdered invoiceItems[index].numberOrdered * invoiceItems[].unitprice Set totalInvoice = TotalInvoice + invoiceItems[index].numberOrdered * invoiceItems[index].unitprice endfor Display in column totalInvoice Return // program_id ptrstrc.cpp // author Don Voils // date_written 06/03/2006 // // description Demonstration of a C++ structure // with pointers to unnamed instances. // #include<iostream> using namespace std; struct Date { short theMonth, theDay, theYear; }; void main() { Date theDate; Date* ptr = &theDate; theDate.theMonth = 7; theDate.theDay = 4; theDate.theYear = 1776; cout << "The date is " << ptr -> theMonth << "/" << ptr -> theDay << "/"<< ptr -> theYear << endl; ptr -> theMonth = 8; ptr -> theDay = 21; ptr -> theYear = 1984; cout << "The date is " << ptr -> theMonth << "/" << ptr -> theDay << "/"<< ptr -> theYear << endl; Date * ptr1 = new Date; ptr1 -> theMonth = 7; ptr1 -> theDay = 4; ptr1 -> theYear = 2004; cout << "The date is " << ptr1 -> theMonth << "/" << ptr1 -> theDay << "/"<< ptr1 -> theYear << endl << endl << endl; char resp; cout << endl << endl << "Continue? "; cin >> resp; cout << endl << endl; delete ptr1; } // program_id quizzes.h // written_by don voils // date_written 3/2/2006 // description This file contain the definition of the // structure Quizzes. /* The following two lines prevent the possibility of a redefinition of the structure Quizzes. */ #ifndef QUIZZES #define QUIZZES /* This header file is to be included into the program studentgrades2.cpp */ struct Quizzes { string firstName; string lastName; int quizGrades[5]; }; #endif // program_id sc_invoice2 // written_by don voils // date_written 3/2/2006 // description This file contains the structure chart for the program: invoice2.cpp // 
// program_id sc_invoice // written_by don voils // date_written 3/2/2006 // description This file contains the structure chart for the program: invoice.cpp //
// program_id struct1.cpp // author don voils // date written 08/31/2006 // // program description Demonstration of structure's // features in C++. // #define AND && #define OR || #include<iostream> #include<iomanip> using namespace std; enum workType {salaried, hourly}; struct Date { int theMonth, theDay, theYear; }; struct Employee { Date hireDate; workType salaryType; char employeeLastName[15], employeeFirstName[10]; float unitPay; }; void main() { char dash; Employee newStaff; // Following two lines are not valid so must use next one // try to remove the comments. // // Employee oldStaff; // oldStaff = { {6,12,70}, salaried, "Thomas", "John", 350.00}; Employee oldStaff = { {6,12,70}, salaried, "Thomas", "John", 350.00}; cout << "The name of the last employee was" << oldStaff.employeeLastName << "," << oldStaff.employeeFirstName << "." << endl << "Hired on " << oldStaff.hireDate.theMonth << "/" << oldStaff.hireDate.theDay << "/" << oldStaff.hireDate.theYear << "." << endl; if (oldStaff.salaryType==salaried) cout << "and was salaried at $" << setiosflags(ios::fixed) << setprecision(2) << setiosflags(ios::showpoint) << oldStaff.unitPay << endl; else cout << "and was hourly at $" << setiosflags(ios::fixed) << setprecision(2) << setiosflags(ios::showpoint) << oldStaff.unitPay << endl << endl; cout << endl << endl << endl << "What is the new employee's name? "; cin >> newStaff.employeeFirstName >> newStaff.employeeLastName; cout << endl << endl << "What is the pay per unit of work? "; cin >> newStaff.unitPay; cout << endl << endl << "What was the hire date? "; cin >> newStaff.hireDate.theMonth >> dash >> newStaff.hireDate.theDay >> dash >> newStaff.hireDate.theYear; int salary; cout << endl << endl << "Is the employee salaried (0) or hourly (1)? "; cin >> salary; newStaff.salaryType= static_cast<workType>(salary); cout << endl << endl << "The name of the new employee is " << newStaff.employeeFirstName << " " << newStaff.employeeLastName << "." << endl << "Hired on " << newStaff.hireDate.theMonth << "/" << newStaff.hireDate.theDay << "/" << newStaff.hireDate.theYear << "." << endl; if (newStaff.salaryType==salaried) cout << "and is salaried at $" << setiosflags(ios::fixed) << setprecision(2) << setiosflags(ios::showpoint) << newStaff.unitPay << endl; else cout << "and is hourly at $" << setiosflags(ios::fixed) << setprecision(2) << setiosflags(ios::showpoint) << newStaff.unitPay << endl; cout << endl << endl; } // program_id struc2.cpp // author don voils // date written 08/31/2006 // // program description This program illustrates a struc // definition, struc variable definition, // struc assignment, and the manipulation // of struc members. // #include<iostream> using namespace std; struct Stuff { char name[30]; float price; }; void main(void) { Stuff item1 = {"Widget", 5.75}; Stuff item2; item2 = item1; cout << "The name of item 1 is " << item1.name << endl << "The price of item 1 is " << item1.price << endl << "The name of item 2 is " << item2.name << endl << "The price of item 2 is " << item2.price << endl << endl << endl; } // program_id struct3.cpp // // author don voils // date written 08/31/2006 // // program description This program illustrates using the dot operator // to access the data members of a structure // instance as well as showing that the size // of an instance is greater to or equal to the // sum of the sizes of the data members. // #include<iostream> using namespace std; struct Date { int theMonth; int theDay; int theYear; }; void main() { char dash; Date invoiceDate; cout << "What is the invoice date? "; cin >> invoiceDate.theMonth >> dash >> invoiceDate.theDay >> dash >> invoiceDate.theYear; cout << endl << "Did you say that the invoice date is " << invoiceDate.theMonth << "/" << invoiceDate.theDay << "/" << invoiceDate.theYear << endl << endl << endl; cout << endl << "The size of the month " << sizeof(invoiceDate.theMonth) << endl << "The size of the day " << sizeof(invoiceDate.theDay) << endl << "The size of the year " << sizeof(invoiceDate.theYear) << endl << "The size of invoiceDate " << sizeof(invoiceDate) << endl; char resp; cout << endl << endl << "Continue? "; cin >> resp; cout << endl << endl; } // program_id: struct4.cpp // author: don voils // date written: 08/31/2006 // // program description: This program illustrates an anonymous structure // #include<iostream> using namespace std; struct { int theMonth; int theDay; int theYear; } invoiceDate; void main() { char dash; cout << "What is the invoice date? "; cin >> invoiceDate.theMonth >> dash >> invoiceDate.theDay >> dash >> invoiceDate.theYear; cout << endl << "Did you say that the invoice date is " << invoiceDate.theMonth << "/" << invoiceDate.theDay << "/" << invoiceDate.theYear << endl << endl << endl; char resp; cout << endl << endl << "Continue? "; cin >> resp; cout << endl << endl; } // program_id studentgrades2.cpp // written_by don voils // date_written 4/12/2006 // // description This program demonstrats the use of arrays // of instances of a structure. #include<iostream> #include<string> using namespace std; // The header file contains the definition of the stucture // #include "quizzes.h" // The function prototypes used // int enterStudents(Quizzes students[]); void calculateAverages(Quizzes students[],int numberStudents); void clearScreen(); void main() { clearScreen(); // The program will have an array // of 30 instances of the structure Quizzes // Quizzes students[30]; // Permits the entry of information about // all of the upto 30 students. It returns // the exact number of students entered. // int numberStudents = enterStudents(students); clearScreen(); // Calculates the average for each student and // displays the name and average on the screen. // calculateAverages(students,numberStudents); cout << endl << endl; char resp; cout << "Continue? "; cin >> resp; cout << endl << endl; } int enterStudents(Quizzes students[]) { char resp; int index; for(index = 0; index < 30 ; ++index) { cout << "What is student " << index+ 1 << "\'s first name? "; cin >> students[index].firstName; cout << "What is student " << index+ 1 << "\'s last name? "; cin >> students[index].lastName; cout << endl; for(int jindex = 0 ; jindex < 5; ++jindex) { cout << "What is " << students[index].firstName + " " + students[index].lastName << "\'s grade on quiz " << jindex + 1 << "? "; cin >> students[index].quizGrades[jindex]; } resp = 'y'; if(index < 29) { cout << endl << "Another student (Y/N)? "; cin >> resp; } if(resp =='N' || resp =='n') { ++index; break; } clearScreen(); } return index; } void calculateAverages(Quizzes students[],int numberStudents) { for(int index = 0; index < numberStudents; ++ index) { int sumQuizzes = 0; for(int jindex = 0; jindex < 5; ++jindex) { sumQuizzes += students[index].quizGrades[jindex]; } cout << students[index].firstName + " " + students[index].lastName << "\'s average is " << sumQuizzes/5.0 << endl ; } } // Used to clear the screen // void clearScreen() { for(int index = 0; index < 50;++index) cout << endl; } // program_id studentgrades.cpp // written_by don voils // date_written 4/12/2006 // // description This program demonstrats the use of arrays // of instances of a structure. #include<iostream> #include<string> using namespace std; // The definition of the stucture // struct Quizzes { string firstName; string lastName; int quizGrades[5]; }; // The function prototypes used // int enterStudents(Quizzes students[]); void calculateAverages(Quizzes students[],int numberStudents); void clearScreen(); void main() { clearScreen(); // The program will have an array // of 30 instances of the structure Quizzes // Quizzes students[30]; // Permits the entry of information about // all of the upto 30 students. It returns // the exact number of students entered. // int numberStudents = enterStudents(students); clearScreen(); // Calculates the average for each student and // displays the name and average on the screen. // calculateAverages(students,numberStudents); cout << endl << endl; char resp; cout << "Continue? "; cin >> resp; cout << endl << endl; } int enterStudents(Quizzes students[]) { char resp; int index; for(index = 0; index < 30 ; ++index) { cout << "What is student " << index+ 1 << "\'s first name? "; cin >> students[index].firstName; cout << "What is student " << index+ 1 << "\'s last name? "; cin >> students[index].lastName; cout << endl; for(int jindex = 0 ; jindex < 5; ++jindex) { cout << "What is " << students[index].firstName + " " + students[index].lastName << "\'s grade on quiz " << jindex + 1 << "? "; cin >> students[index].quizGrades[jindex]; } resp = 'y'; if(index < 29) { cout << endl << "Another student (Y/N)? "; cin >> resp; } if(resp =='N' || resp =='n') { ++index; break; } clearScreen(); } return index; } void calculateAverages(Quizzes students[],int numberStudents) { for(int index = 0; index < numberStudents; ++ index) { int sumQuizzes = 0; for(int jindex = 0; jindex < 5; ++jindex) { sumQuizzes += students[index].quizGrades[jindex]; } cout << students[index].firstName + " " + students[index].lastName << "\'s average is " << sumQuizzes/5.0 << endl ; } } // Used to clear the screen // void clearScreen() { for(int index = 0; index < 50;++index) cout << endl; } // program_id the_date.cpp // author Don Voils // date_written 08/04/2006 // program description The date structure with // member functions. // #include <iostream> using namespace std; struct date { long month, day, year; void setDate() { char dash; cout << "What is the date? "; cin >> month >> dash >> day >> dash >> year; if(year < 10) year += 2000; else if(year<100) year += 1900; } void monthName() { char month_name[][10] = {"","JANUARY", "FEBRUARY", "MARCH", "APRIL", "MAY", "JUNE","JULY", "AUGUST", "SEPTEMBER", "OCTOBER", "NOVEMBER", "DECEMBER"}; cout << endl<< endl << "The date is " << month_name[month] << " " << day << ", " << year; } }; void main() { date aDate; aDate.setDate(); aDate.monthName(); char resp; cout << endl << endl << "Continue? "; cin >> resp; cout << endl << endl; } // program_id theAccount.h // written_by don voils // date_written 3/2/2006 // description This file contains the definition // of the structure Account. The member functions // for the structure are placed in the // source file: account2.cpp #ifndef ACCOUNT #define ACCOUNT struct Account { float theBalance; void settheBalance(float); float gettheBalance(); void doDeposit(float); void doWithdrawal(float); }; #endif // program_id theAccount.h // written_by don voils // date_written 3/2/2006 // // description This file contains the member functions // for the structure Account whose definition is contained // in the header file: theAccount.h. This file // should be a source file in the project. // #include "theAccount.h" void Account::settheBalance(float theAmount) { theBalance = theAmount; } float Account::gettheBalance() { return theBalance; } void Account::doDeposit(float theAmount) { theBalance += theAmount; } void Account::doWithdrawal(float theAmount) { theBalance -= theAmount; } // program_id theClock.cpp // author: DON VOILS // date written: 07/20/2006 // // program description This program demonstrates a timer and // how to keep data at the same place on the // screen. It uses the system date and time // to begin the clock. // // Note: The function: putch() and kbhit() were changed to // _putch() and _kbhit() in Visual Studio .NET 2005 // for security reasons. // #include<iostream> #include<string> #include<conio.h> using namespace std; #include"thedate.h" long theMonth(string theString); void main() { long seconds=0L, minutes=0L, hours=0L, counter, loop, month, day, year; string theTimer = __TIME__; string theDate = __DATE__; string Month = theDate.substr(0,3); string Day = theDate.substr(4,2); string Year = theDate.substr(7,4); month = theMonth(Month); day = (long) atoi(Day.c_str()); year = (long) atoi(Year.c_str()); date clockDate(month,day,year); string Hours = theTimer.substr(0,2); string Minutes = theTimer.substr(3,2); string Seconds = theTimer.substr(6,2); hours = atoi(Hours.c_str()); minutes = atoi(Minutes.c_str()); seconds = atoi(Seconds.c_str()); // This clears the screen. // system("cls"); bool nextDay = false; clockDate.showDate(); for(;!_kbhit();) { for(loop=1;loop<=8;++loop) { for(counter=1L;counter <=2L;++counter) _putch('\b'); for(counter=1L;counter <=2L;++counter) _putch(' '); for(counter=1l;counter <=2L;++counter) _putch('\b'); } ++seconds; if(seconds > 59) { minutes++; seconds = 0; } if(minutes >59) { hours++; if(hours==24) nextDay=true; if(hours>24) hours = 1; minutes = 0; } if(nextDay) { // This function clears the screen. // system("cls"); clockDate.next_day(); clockDate.showDate(); nextDay = false; } cout << " " ; if(hours<10) cout << "0"; cout << hours; cout << ":"; if(minutes<10) cout << "0"; cout << minutes; cout << ":"; if(seconds <10) cout << "0"; cout << seconds; for(counter=1l;counter <= 299999999L;++counter); } } long theMonth(string Month) { short month; if(Month=="Jan") month = 1; else if(Month=="Feb") month = 2; else if(Month=="Mar") month = 3; else if(Month=="Apr") month = 4; else if(Month=="May") month = 5; else if(Month=="Jun") month = 6; else if(Month=="Jul") month = 7; else if(Month=="Aug") month = 8; else if(Month=="Sep") month = 9; else if(Month=="Oct") month = 10; else if(Month=="Nov") month = 11; else month = 12; return (long) month; } // program_id thedate.h // written_by Don Voils // date_written 7/200/2006 // header description This header contains the definition // of the class date that can be used in many // different examples. // // USER DEFINED DATA TYPES // typedef int COUNTER; struct date { long month, day, year; date(); date(long m,long d,long y); void set_date(); void showDate(); void setMonth(long m); void setDay(long d); void setYear(long y); long getMonth(); long getDay(); long getYear(); void next_day(); long days_between(date a_date); long days_since(date a_date); long f(date a_date); long g(date a_date); void find_day_of_week_for(); bool incorrect_date(date a_date); long days_in_month(date a_date); bool is_leap_year(date a_date); }; date::date() { } date::date(long m,long d,long y) { month = m; day = d; year = y; } void date::set_date() { date a_date; char dash; int theCount = 0; do { a_date.month = 0L; a_date.day = 0L; a_date.year = 0L; if(theCount==0) cout << endl << endl << "FINDING THE DAY OF THE WEEK" << endl << endl; else cout << endl << endl <<"Error in entering date. Please try again. " << endl << endl; month = 0L; day = 0L; year = 0L; cout << "What is the date? MM/DD/YY "; cin >> month >> dash >> day >> dash >> year; if(year<10) year = year + 2000L; else if(year < 100) year = year + 1900L; a_date.month = month; a_date.day = day; a_date.year = year; ++theCount; } while(incorrect_date(a_date)); } void date::find_day_of_week_for() { date a_date; int number; a_date.month=month; a_date.day=day; a_date.year=year; string day_name[7]= {"Saturday", "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday"}; string month_name[13]={"","January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"}; number = (int)(days_between(a_date) % 7L); cout << endl << endl << month_name[month] << " " << day << ", " << year << " was a " << day_name[number] << endl << endl; } void date::showDate() { date a_date; int number; a_date.month=month; a_date.day=day; a_date.year=year; string day_name[7]= {"Saturday", "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday"}; string month_name[13]={"","January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"}; number = (int)(days_between(a_date) % 7L); cout << day_name[number] << " " << month_name[month] << " " << day << ", " << year << endl; } void date::setMonth(long m) { month = m; } void date::setDay(long d) { day = d; } void date::setYear(long y) { year = y; } long date::getMonth() { return month; } long date::getDay() { return day; } long date::getYear() { return year; } long date::days_between(date day) { date t_date; t_date.month=11L; t_date.day=24L; t_date.year=1934L; long number = days_since(day) - days_since(t_date); return(number); } long date::days_since(date a_date) { long number = 1461L*f(a_date)/4L + 153L*g(a_date)/5L + a_date.day; return(number); } long date::f(date a_date) { long number = (a_date.month<=2L) ? a_date.year - 1L : a_date.year; return(number); } long date::g(date a_date) { long number = (a_date.month<=2L) ? a_date.month + 13L : a_date.month + 1L; return(number); } bool date::incorrect_date(date a_date) { bool bad_date; if (((a_date.month>=1L) && (a_date.month<=12L)) && ((a_date.day>=1L) && (a_date.day<=days_in_month(a_date)))) bad_date = false; else bad_date = true; return(bad_date); } long date::days_in_month(date a_date) { int upper_limit; long days_in_month[] = {0L, 31L, 28L, 31L, 30L, 31L, 30L, 31L, 31L, 30L, 31L,30L, 31L}; if (a_date.month != 2L) upper_limit = days_in_month[a_date.month]; else if (is_leap_year(a_date)) upper_limit = 29L; else upper_limit = days_in_month[a_date.month]; return (upper_limit); } bool date::is_leap_year(date a_date) { bool a_leap_year; if (((a_date.year%4L == 0L)&&(a_date.year%100L != 0L)) || (a_date.year%400L == 0L)) a_leap_year = true; else a_leap_year = false; return(a_leap_year); } void date::next_day() { date a_date(month,day,year); if(day+1 <= days_in_month(a_date)) day++; else if(month+1<=12) { day = 1; month++; } else { day = 1; month = 1; year++; } } // program_id typedef1.cpp // author don voils // date_written 08/31/2006 // // program description A program to test whether typedef // can have be used for I/O. // #include<iostream> using namespace std; typedef int Boolean; void main() { Boolean closeQuarter; cout << "Should we close the quarter? (0=NO, 1=YES)"; cin >> closeQuarter; if (closeQuarter) cout << endl << "Closing quarter!"; else cout << endl << "Not closing quarter now!"; char resp; cout << endl << endl << "Continue?"; cin >> resp; cout << endl << endl; } 
Intermediate Business Programming with C++
ISBN: 738453099
EAN: N/A
EAN: N/A
Year: 2007
Pages: 142
Pages: 142