var someVariable = 3
var anotherVariable = 107
let (var1, var2) = swapTwoValues(variableA: someVariable, variableB: anotherVariable)
print("someVariable is now \(var1), and anotherVariable is now \(var2)")

var string1 = "Hello"
var string2 = "World"
let (varString1, varString2) = swapTwoValues(variableA: string1, variableB: string2)
print("string1 is now \(varString1), and string2 is now \(varString2)")