#unittest {
	name: "_args used in expression.";
	error: NONE;
	result: 640;
};

func sum() {
	var tot = 0;
	_args.loop(func (value) {tot +=value});
	return tot;
}

func main() {
	var a = 10;
	var b = 20;
	return sum(a, b, a*(a+b+9)+(b-a), a, a*b)
}