## Check if Number is Odd

To check if a given number is odd, use the condition that the number leaves a reminder of `1`

when divided with `2`

.

In the following program, we will define a function `isOdd()`

that accepts an integer, and returns `true`

if the number is odd or `false`

if the number is not even.

**main.swift**

```
import Foundation
func isOdd(_ n: Int) -> Bool {
return n % 2 == 1
}
print("Is 3 odd? \(isOdd(3))")
print("Is 8 odd? \(isOdd(8))")
```

**Program Output**

```
Is 3 odd? true
Is 8 odd? false
```

## Summary

Summarising this tutorial, we learned how to check if a given number is odd or not.