Swift Program – Check if Number is Even

Check if Number is Even

To check if a given number is even, use the condition that the number leaves a reminder of 0 when divided with 2.

In the following program, we will define a function isEven() that accepts an integer, and returns true if the number is even or false if the number is not even.

main.swift

import Foundation

func isEven(_ n: Int) -> Bool {
    return n % 2 == 0
}

print("Is 4 even? \(isEven(4))")
print("Is 11 even? \(isEven(11))")

Program Output

Is 4 even? true
Is 11 even? false

Summary

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