char :: u8;
short :: i16;
int :: i32;
long :: i64;
float :: f32;
double :: f64;

main :: () -> void {
  a :u64= 2;
  f := (c:u64,b:u64)->void{
    print_u64 c-b+a;
  };
  f = (c:u64,b:u64)->void{
    print_u64 c*b;
  };
  foo(fun = f);
};

foo :: (fun:(b:u64,u64)->void)->void{
  fun(b = 3,4);
};