add new function

src/main.rs

@@ -2,9 +2,12 @@
 fn main() {
     print("Hello, world!");
     print("Goodbye, world!");
+    print("bye everyone");
+    // some (not really) documentation comment
 }
 
 // a function that prints the msg
 fn print(m: &str) {
     println!("{m}")
+    // hello ?
 }