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   ► KBProgrammingC++Standard C++C++ Language...   Print This     
  From the March 2009 Issue of Prestwood eMag
 
C++ Language Basics:
C++ Variables (int x=0;)
 
Posted 16 years ago on 11/10/2008 and updated 1/16/2009
C++ Code Snippet:
 A flashcard from our C++ Flashcards Library
 A code snippet from our C++ Code Snippets Page
 Tags: C++ , Variables

KB101577

Languages Focus: Variables

A variable holds a value that you can use and change throughout your code so long as the variable is within scope. With variable declaration, you not only want to know the syntax of how you declare a variable but you also want to know where. Are you allowed to declare a variable inline? What are the available scopes: local vs. global. Can you assign a value at the same time you declare a variable?

C++ Variables

Variable names are case sensitive.

The fundamental variable types in C++ are char, short int, int, long int, bool, float, double, long double, and wchar_t. The integer data types char, short, long and int can be either signed or unsigned. Signed variables are positive and negative. Unsigned variables are positive only.

Syntax Example:

C++, Java, and C# all use C-like variable declaration.

int Age;
int Age = 43;
float a, b, c;
string FullName; //#include 
unsigned short int FamilyMemberCount;

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Code Contributed By Mike Prestwood:

Mike Prestwood is a drummer, an author, and creator of the PrestwoodBoards online community. He is the President & CEO of Prestwood IT Solutions. Prestwood IT provides Coding, Website, and Computer Tech services. Mike has authored 6 computer books and over 1,200 articles. As a drummer, he maintains play-drums.com and has authored 3 drum books. If you have a project you wish to discuss with Mike, you can send him a private message through his PrestwoodBoards home page or call him 9AM to 4PM PST at 916-726-5675 x205.

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