Swift Program – Check if Number is Odd

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.