book: fix typo

rust-lang · Mar 26, 2015 · ce668a8 · ce668a8
1 parent 199bdcf
commit ce668a8
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/doc/trpl/standard-input.md b/src/doc/trpl/standard-input.md
@@ -5,7 +5,8 @@ we haven't seen before. Here's a simple program that reads some input,
 and then prints it back out:
 
 ```{rust,ignore}
-corefn main() {
+# #![feature(old_io)]
+fn main() {
     println!("Type something!");
 
     let input = std::old_io::stdin().read_line().ok().expect("Failed to read line");