Question

How to multiply two numbers without using the multiple operator (*) in Swift

Answer 1

import Foundation

func mul() {
    let a = 3
    let b = 9
    var mul = 0

    // mul = a * b

    for _ in 1...a {
        mul += b
    }

    print("\(a) * \(b) = \(mul)")
}

mul()


 
/*
run:
 
3 * 9 = 27
 
*/

 

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