working on rustlings

Cargo.lock

@@ -459,7 +459,7 @@ checksum = "f497285884f3fcff424ffc933e56d7cbca511def0c9831a7f9b5f6153e3cc89b"
 
 [[package]]
 name = "rustlings"
-version = "5.4.0"
+version = "5.4.1"
 dependencies = [
  "argh",
  "assert_cmd",

exercises/variables/variables1.rs

@@ -5,6 +5,6 @@
 // I AM NOT DONE
 
 fn main() {
-    x = 5;
+   let x = 5;
     println!("x has the value {}", x);
 }

exercises/variables/variables2.rs

@@ -4,7 +4,7 @@
 // I AM NOT DONE
 
 fn main() {
-    let x;
+    let x: i32 = 20;
     if x == 10 {
         println!("x is ten!");
     } else {

exercises/variables/variables3.rs

@@ -4,6 +4,7 @@
 // I AM NOT DONE
 
 fn main() {
-    let x: i32;
-    println!("Number {}", x);
+    let x: i32 = 5;
+    let y: i32 = 10;
+    println!("Number {}", y);
 }

exercises/variables/variables4.rs

@@ -4,7 +4,7 @@
 // I AM NOT DONE
 
 fn main() {
-    let x = 3;
+    let mut x: i32 = 3;
     println!("Number {}", x);
     x = 5; // don't change this line
     println!("Number {}", x);

exercises/variables/variables5.rs

@@ -6,6 +6,6 @@
 fn main() {
     let number = "T-H-R-E-E"; // don't change this line
     println!("Spell a Number : {}", number);
-    number = 3; // don't rename this variable
+    let number = 3; // don't rename this variable
     println!("Number plus two is : {}", number + 2);
 }

exercises/variables/variables6.rs

@@ -3,7 +3,8 @@
 
 // I AM NOT DONE
 
-const NUMBER = 3;
+const NUMBER: u32 = 3;
+
 fn main() {
     println!("Number {}", NUMBER);
 }