main : boucle pour lire stdin

src/main.rs

@@ -1,3 +1,14 @@
+use std::io::Write;
+
 fn main() {
-    println!("Hello, world!");
+    let mut user_input = String::new();
+    let mut bytes_read = 1;
+
+    while bytes_read != 0 {
+        print!("$ ");
+        std::io::stdout().flush().unwrap();
+        bytes_read = std::io::stdin()
+            .read_line(&mut user_input)
+            .expect("error reading user input");
+    }
 }