// function definition
func findSquare (num: Int) -> Int {
var result = num * num
return result
}
// function call
var square = findSquare(num: 3)
print("Square:",square)
func aFunction() -> <RETURN_TYPE> {
return <RETURN_TYPE>
}
//call function like this
aFunction()
func functionWithReturnType() -> String { return "I must return a string"}
func addNumbers() -> Int {
...
return sum
}
// function definition
func findSquare (num: Int) -> Int {
var result = num * num
return result
}
// function call
var square = findSquare(num: 3)
print("Square:",square)