Variables are used for storing data in memory during program execution.
Data Types
Depending on the type of 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 , long, and long 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 or 8 | |
long long | 8 | |
float | 4 | |
double ... |