Variable types supported by C++ programs are shown in the following table.
It lists the variable type, the most common memory size, and the possible values that it can hold.
| Type | Size | Values |
|---|---|---|
| unsigned short | 2 bytes | 0 to 65,535 |
| short | 2 bytes | -32,768 to 32,767 |
| unsigned long | 4 bytes | 0 to 4,294,967,295 |
| long | 4 bytes | -2,147,483,648 to 2,147,483,647 |
| int | 4 bytes | -2,147,483,648 to 2,147,483,647 |
| unsigned int | 4 bytes | 0 to 4,294,967,295 |
| long long int | 8 bytes | -9.2 quintillion to 9.2 quintillion |
| char | 1 byte | 256 character values |
| bool | 1 byte | true or false |
| float | 4 bytes | 1.2e-38 to 3.4e38 |
| double | 8 bytes | 2.2e-308 to 1.8e308 |
The short and long variables also are called short int and long int in C++.