Is Even

Check if the given number is even or not. Your function should return True if the number is even, and False if the number is odd.

**
Input:
**
An int.

**
Output:
**
A bool.

**
Example:
**

is_even(2) == True is_even(5) == False is_even(0) == True

**
How itâ€™s used:
**
*
(math is used everywhere)
*

**
Precondition:
**
*
both given ints should be between -1000 and 1000
*