fix(variables): reorder and redo hint texts

exercises/variables/variables1.rs

@@ -1,6 +1,6 @@
 // variables1.rs
 // Make me compile!
-// Execute the command `rustlings hint variables1` if you want a hint :)
+// Execute `rustlings hint variables1` or use the `hint` watch subcommand for a hint.
 
 // I AM NOT DONE
 

exercises/variables/variables2.rs

@@ -1,13 +1,13 @@
 // variables2.rs
-// Make me compile! Execute the command `rustlings hint variables2` if you want a hint :)
+// Execute `rustlings hint variables2` or use the `hint` watch subcommand for a hint.
 
 // I AM NOT DONE
 
 fn main() {
     let x;
     if x == 10 {
-        println!("Ten!");
+        println!("x is ten!");
     } else {
-        println!("Not ten!");
+        println!("x is not ten!");
     }
 }

exercises/variables/variables3.rs

@@ -1,11 +1,9 @@
 // variables3.rs
-// Make me compile! Execute the command `rustlings hint variables3` if you want a hint :)
+// Execute `rustlings hint variables3` or use the `hint` watch subcommand for a hint.
 
 // I AM NOT DONE
 
 fn main() {
-    let x = 3;
-    println!("Number {}", x);
-    x = 5; // don't change this line
+    let x: i32;
     println!("Number {}", x);
 }

exercises/variables/variables4.rs

@@ -1,9 +1,11 @@
 // variables4.rs
-// Make me compile! Execute the command `rustlings hint variables4` if you want a hint :)
+// Execute `rustlings hint variables4` or use the `hint` watch subcommand for a hint.
 
 // I AM NOT DONE
 
 fn main() {
-    let x: i32;
+    let x = 3;
+    println!("Number {}", x);
+    x = 5; // don't change this line
     println!("Number {}", x);
 }

exercises/variables/variables5.rs

@@ -1,5 +1,5 @@
 // variables5.rs
-// Make me compile! Execute the command `rustlings hint variables5` if you want a hint :)
+// Execute `rustlings hint variables5` or use the `hint` watch subcommand for a hint.
 
 // I AM NOT DONE
 

exercises/variables/variables6.rs

@@ -1,5 +1,5 @@
 // variables6.rs
-// Make me compile! Execute the command `rustlings hint variables6` if you want a hint :)
+// Execute `rustlings hint variables6` or use the `hint` watch subcommand for a hint.
 
 // I AM NOT DONE
 

info.toml

@@ -43,20 +43,20 @@ name = "variables3"
 path = "exercises/variables/variables3.rs"
 mode = "compile"
 hint = """
-In Rust, variable bindings are immutable by default. But here we're trying
-to reassign a different value to x! There's a keyword we can use to make
-a variable binding mutable instead."""
+Oops! In this exercise, we have a variable binding that we've created on
+line 7, and we're trying to use it on line 8, but we haven't given it a
+value. We can't print out something that isn't there; try giving x a value!
+This is an error that can cause bugs that's very easy to make in any
+programming language -- thankfully the Rust compiler has caught this for us!"""
 
 [[exercises]]
 name = "variables4"
 path = "exercises/variables/variables4.rs"
 mode = "compile"
 hint = """
-Oops! In this exercise, we have a variable binding that we've created on
-line 7, and we're trying to use it on line 8, but we haven't given it a
-value. We can't print out something that isn't there; try giving x a value!
-This is an error that can cause bugs that's very easy to make in any
-programming language -- thankfully the Rust compiler has caught this for us!"""
+In Rust, variable bindings are immutable by default. But here we're trying
+to reassign a different value to x! There's a keyword we can use to make
+a variable binding mutable instead."""
 
 [[exercises]]
 name = "variables5"