### Description

This function returns whether a given variable is a real number
(single, double or integer) or not. In some cases you want to check
and see if a variable in *GameMaker Studio 2* holds a real
number, and that's when you would use this function. It does
*not* return the real number but rather `true` or
`false`, so a value of, for example, "fish" for `n`
will return `false`, but a value of 200 for `n` will
return `true`.

### Syntax:

is_real(n);

Argument |
Description |

n |
The argument to check. |

### Returns:

Boolean

**Example:**

if is_real(val)

{

score += val;

}

The above code checks the variable "val" to see if it is a real
number and if it is it then adds it to the score.