rustlings/exercises/macros/macros4.rs
2021-06-25 15:04:52 +08:00

17 lines
304 B
Rust

// macros4.rs
// Make me compile! Execute `rustlings hint macros4` for hints :)
macro_rules! my_macro {
() => {
println!("Check out my macro!");
};
($val:expr) => {
println!("Look at this other macro: {}", $val);
};
}
fn main() {
my_macro!();
my_macro!(7777);
}