mathmatics-1

mathmatics1.swift

var firstNumber = 1
let secondNumber = 2

firstNumber += secondNumber
// first number is now equal to 3

firstNumber *= secondNumber
// first number is now equal to 6 becuase firstNumber became 3 in
// the last operation and we just multiplied it by 2

firstNumber -= secondNumber
// firstNumber is now 4

firstNumber /= secondNumber
firstNumber /= secondNumber
// that was on purpose because I want you to guess what the value is

var name = "John"
var lastName = "Doe"
var name += (" " + lastName)
// name is now "John Doe"