main : use std::io

src/main.rs

@@ -1,3 +1,4 @@
+use std::io;
 use std::io::Write;
 
 fn main() {
@@ -6,8 +7,9 @@ fn main() {
 
     while bytes_read != 0 {
         print!("$ ");
-        std::io::stdout().flush().unwrap();
-        bytes_read = std::io::stdin()
+        io::stdout().flush().unwrap();
+
+        bytes_read = io::stdin()
             .read_line(&mut user_input)
             .expect("error reading user input");
     }