rustlings: complete 00 and 01

1 files changed, 13 insertions, 2 deletions

diff --git a/rustlings/solutions/01_variables/variables3.rs b/rustlings/solutions/01_variables/variables3.rs
index dcf2377..15f6557 100644
--- a/rustlings/solutions/01_variables/variables3.rs
+++ b/rustlings/solutions/01_variables/variables3.rs
@@ -1,4 +1,15 @@
+#![allow(clippy::needless_late_init)]
+
 fn main() {
-    // DON'T EDIT THIS SOLUTION FILE!
-    // It will be automatically filled after you finish the exercise.
+    // Reading uninitialized variables isn't allowed in Rust!
+    // Therefore, we need to assign a value first.
+    let x: i32 = 42;
+
+    println!("Number {x}");
+
+    // It is possible to declare a variable and initialize it later.
+    // But it can't be used before initialization.
+    let y: i32;
+    y = 42;
+    println!("Number {y}");
 }