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Complete test4

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This commit is contained in:
Paul Czeresko 2019-07-22 21:01:15 -04:00
parent d6a79f2399
commit 9521266b58
1 changed files with 7 additions and 0 deletions

7
exercises/test4.rs
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@ -5,6 +5,13 @@
// Write a macro that passes the test! No hints this time, you can do it! // Write a macro that passes the test! No hints this time, you can do it!
#[macro_export]
macro_rules! my_macro {
($x:expr) => {{
format!("Hello {}", $x)
}};
}
fn main() { fn main() {
if my_macro!("world!") != "Hello world!" { if my_macro!("world!") != "Hello world!" {
panic!("Oh no! Wrong output!"); panic!("Oh no! Wrong output!");