package {
    import flash.display.Sprite;
    import flash.text.TextField;

    public class Functions extends Sprite {
        public function Functions() {
            // Here's a function that takes two Numbers and returns
            // their sum as a Number.
            function plus(a:Number, b:Number):Number {
                // ActionScript doesn't require explicit returns,
                // but it's good practice to include them.
                return a + b;
            }

            // In ActionScript, we can't omit type declarations
            // for parameters, even if they're the same type.
            function plusPlus(a:Number, b:Number, c:Number):Number {
                return a + b + c;
            }

            // Call a function just as you'd expect, with
            // name(args).
            var res:Number = plus(1, 2);
            trace("1+2 = " + res);

            res = plusPlus(1, 2, 3);
            trace("1+2+3 = " + res);
        }
    }
}