// out 参数 + 结构体测试
struct Point { x: i64, y: i64 }

fn init_point(out p: Point) -> void {
    p = Point { x: 100, y: 200 };
}

fn offset_point(out p: Point) -> void {
    p = Point { x: p.x + 50, y: p.y + 100 };
}

fn main() -> void {
    let p = Point { x: 0, y: 0 };
    print_i64(p.x);
    print_i64(p.y);
    init_point(p);
    print_i64(p.x);
    print_i64(p.y);
    offset_point(p);
    print_i64(p.x);
    print_i64(p.y);
}