fn main() {
	let mut subject = "world";
	
    println!("Hello, {}!", subject);
    println!("Goodbye, {}!", subject);

    subject = "moon";

    println!("Hello, {}!", subject);
    println!("Goodbye, {}!", subject);
}

fn main() {
	let subject = "world";
	
    println!("Hello, {}!", subject);
    println!("Goodbye, {}!", subject);
}

--- 
+++ 
@@ -1,6 +1,11 @@
 fn main() {
-	let subject = "world";
+	let mut subject = "world";
 	
     println!("Hello, {}!", subject);
     println!("Goodbye, {}!", subject);
+
+    subject = "moon";
+
+    println!("Hello, {}!", subject);
+    println!("Goodbye, {}!", subject);
 }
Save code after episode is recorded
