extension Int {
    //Taken from https://stackoverflow.com/a/26181323/1801544
    func pad(toSize: Int) -> String {
        let string = String(self, radix: 2)
        var padded = string
        for _ in 0..<(toSize - string.count) {
            padded = "0" + padded
        }
        return padded
    }
}
func xor() {
    for x in 0...100 {
        let output = x^2
        print("x: \(x.pad(toSize: 8)) - \(x)")
        print("2: \(2.pad(toSize: 8)) - \(2)")
        print("r: \(output.pad(toSize: 8)) - \(output)")
        print("-")
    }
}
xor()