CHAPTER 3
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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