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C++ Quick Syntax Reference by Mikael Olsson

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CHAPTER 3

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Variables

Variables are used for storing data during program execution.

Data types

Depending on what data you need to store there are several kinds of built-in data types. These are often called fundamental data types or primitives . The integer (whole number) types are short, int and long. The float, double and long double types are floating-point (real number) types. The char type holds a single character and the bool type contains either a true or false value.

Data Type Size (byte) Description
char 1 Integer or character
short 2
int 4 Integer
long 4
float 4
double 8 Floating-point number ...

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