Question

How to find sum of the first N even numbers in Swift

Answer 1

import Foundation

let N = 5

// The sum of the first N even numbers is N * (N + 1)
var sumEven: Int = N * (N + 1)

print("The sum of the first \(N) even numbers is: \(sumEven)")

// 2 + 4 + 6 + 8 + 10 = 30


/*
run:

The sum of the first 5 even numbers is: 30

*/

 

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