# Variables (Computer Science)
A variable is declared
```c
int x;
for (int i; i < x; i++) {
}
```
There are several common variable types
| Name | Bytes | Description |
| --- | --- | --- |
| Integer | 4 | Stores a whole number |
| Float (Floating Point) | a | aaa |
| [[Pointers]] | aa | aa |