Using Structures with Functions

There are two ways to pass the information in structures to functions. You can either pass the entire structure or pass the individual members of a structure. By default, structures are passed by value. Structures and their members can also be passed by reference by passing either references or pointers.

To pass a structure by reference, pass the address of the structure object or a reference to the structure object. Arrays of structureslike all other arraysare passed by reference.

In Chapter 7, we stated that an array could be passed by value by using a structure. To pass an array by value, create a structure (or a class) with the array as a member, then pass an object of that structure (or class) type to a function by value. Because structure objects are passed by value, the array member, too, is passed by value.

Performance Tip 22.1

Passing structures (and especially large structures) by reference is more efficient than passing them by value (which requires the entire structure to be copied).

Introduction to Computers, the Internet and World Wide Web

Introduction to C++ Programming

Introduction to Classes and Objects

Control Statements: Part 1

Control Statements: Part 2

Functions and an Introduction to Recursion

Arrays and Vectors

Pointers and Pointer-Based Strings

Classes: A Deeper Look, Part 1

Classes: A Deeper Look, Part 2

Operator Overloading; String and Array Objects

Object-Oriented Programming: Inheritance

Object-Oriented Programming: Polymorphism


Stream Input/Output

Exception Handling

File Processing

Class string and String Stream Processing

Web Programming

Searching and Sorting

Data Structures

Bits, Characters, C-Strings and structs

Standard Template Library (STL)

Other Topics

Appendix A. Operator Precedence and Associativity Chart

Appendix B. ASCII Character Set

Appendix C. Fundamental Types

Appendix D. Number Systems

Appendix E. C Legacy Code Topics

Appendix F. Preprocessor

Appendix G. ATM Case Study Code

Appendix H. UML 2: Additional Diagram Types

Appendix I. C++ Internet and Web Resources

Appendix J. Introduction to XHTML

Appendix K. XHTML Special Characters

Appendix L. Using the Visual Studio .NET Debugger

Appendix M. Using the GNU C++ Debugger


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C++ How to Program
C++ How to Program (5th Edition)
ISBN: 0131857576
EAN: 2147483647
Year: 2004
Pages: 627
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