Appendix C: Answers to Review Questions

Chapter 1

1.	What is a variable?
2.	What is a statement?
3.	Which of the following are legal names for variables in C++? Firstname &salary No x y first@name
4.	All valid C++ statements end with a what?
5.	What type of value must the main function return?
6.	What is the purpose of brackets?
7.	What is a local variable?
8.	What is a global variable?
9.	If a function does not return anything, then what do you put for its return type?
10.	What is a parameter?

Answers

1.	A place in memory set aside to hold data of a particular type. The variable name is simply a reference to that section of memory.
2.	A line of code that performs some action
3.	Firstname Yes &salary No x Yes y Yes first@name No
4.	A semicolon (;)
5.	An int
6.	To establish boundaries for a block of code
7.	A variable declared within some block of code. That variable is only good inside that block of code.
8.	A variable declared outside any block of code. That means it is good throughout all functions in that file.
9.	void
10.	A variable that is passed to a function