enum Shape {
    Circle(float),
    Rect(float, float)
}

fn main() {
    let r = Shape.Rect(10.0, 20.0);
    
    let matched = 0;
    match r {
        Shape::Rect(w, h) => {
            assert(w == 10.0, "w == 10.0");
            assert(h == 20.0, "h == 20.0");
            matched = 1;
        }
        Shape::Circle(r) => {
            exit(1);
        }
    }
    assert(matched == 1, "Matched Rect");

    let c = Shape.Circle(5.0);
    match c {
        Shape::Circle(val) => {
            assert(val == 5.0, "val == 5.0");
        }
        _ => {
            exit(1);
        }
    }
}