Variables completed

exercises/variables/variables1.rs

@@ -2,9 +2,7 @@
 // Make me compile!
 // Execute `rustlings hint variables1` or use the `hint` watch subcommand for a hint.
 
-// I AM NOT DONE
-
 fn main() {
-    x = 5;
-    println!("x has the value {}", x);
+    let  x = 5;
+    println!("x has the value {:?}", x);
 }

exercises/variables/variables2.rs

@@ -1,10 +1,9 @@
 // variables2.rs
 // Execute `rustlings hint variables2` or use the `hint` watch subcommand for a hint.
 
-// I AM NOT DONE
 
 fn main() {
-    let x;
+    let x: u32 = 0 ;
     if x == 10 {
         println!("x is ten!");
     } else {

exercises/variables/variables3.rs

@@ -1,9 +1,7 @@
 // variables3.rs
 // Execute `rustlings hint variables3` or use the `hint` watch subcommand for a hint.
 
-// I AM NOT DONE
-
 fn main() {
-    let x: i32;
-    println!("Number {}", x);
+    let x: i32 = 10;
+    println!("Number {:?}", x);
 }

exercises/variables/variables4.rs

@@ -1,11 +1,10 @@
 // variables4.rs
 // Execute `rustlings hint variables4` or use the `hint` watch subcommand for a hint.
 
-// I AM NOT DONE
 
 fn main() {
-    let x = 3;
-    println!("Number {}", x);
+    let mut x = 3;
+    println!("Number {:?}", x);
     x = 5; // don't change this line
-    println!("Number {}", x);
+    println!("Number {:?}", x);
 }

exercises/variables/variables5.rs

@@ -1,11 +1,12 @@
 // variables5.rs
 // Execute `rustlings hint variables5` or use the `hint` watch subcommand for a hint.
 
-// I AM NOT DONE
 
 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
-    println!("Number plus two is : {}", number + 2);
+    {
+        let number = 3; // don't rename this variable
+        println!("Number plus two is : {}", number + 2);
+    }
 }

exercises/variables/variables6.rs

@@ -1,9 +1,7 @@
 // variables6.rs
 // Execute `rustlings hint variables6` or use the `hint` watch subcommand for a hint.
 
-// I AM NOT DONE
-
-const NUMBER = 3;
+const NUMBER : u32 = 3;
 fn main() {
-    println!("Number {}", NUMBER);
+    println!("Number {:?}", NUMBER);
 }