rustlings/exercises/macros/macros4.rs

17 lines
320 B
Rust

// macros4.rs
// Execute `rustlings hint macros4` or use the `hint` watch subcommand for a hint.
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);
}