From 36cbf9d86571311e0871ded5dcc44f5a153c93ca Mon Sep 17 00:00:00 2001
From: Reality Enjoyer <git@88842069.com>
Date: Thu, 8 Jan 2026 07:30:04 +0000
Subject: [PATCH] intro and variables

---
 .gitignore                           | 1 +
 exercises/00_intro/intro1.rs         | 1 +
 exercises/00_intro/intro2.rs         | 2 +-
 exercises/01_variables/variables1.rs | 2 +-
 exercises/01_variables/variables2.rs | 2 +-
 exercises/01_variables/variables3.rs | 4 ++--
 exercises/01_variables/variables4.rs | 2 +-
 exercises/01_variables/variables5.rs | 2 +-
 exercises/01_variables/variables6.rs | 2 +-
 9 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/.gitignore b/.gitignore
index 9182e2f..a14acee 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 Cargo.lock
 target/
 .vscode/
+solutions/
diff --git a/exercises/00_intro/intro1.rs b/exercises/00_intro/intro1.rs
index 172a6ab..9e7d0cd 100644
--- a/exercises/00_intro/intro1.rs
+++ b/exercises/00_intro/intro1.rs
@@ -6,6 +6,7 @@
 // Try adding a new `println!` and check the updated output in the terminal.
 
 fn main() {
+    println!("hello world!\n");
     println!(r#"       Welcome to...                      "#);
     println!(r#"                 _   _ _                  "#);
     println!(r#"  _ __ _   _ ___| |_| (_)_ __   __ _ ___  "#);
diff --git a/exercises/00_intro/intro2.rs b/exercises/00_intro/intro2.rs
index c6cb645..03e376e 100644
--- a/exercises/00_intro/intro2.rs
+++ b/exercises/00_intro/intro2.rs
@@ -1,4 +1,4 @@
 fn main() {
     // TODO: Fix the code to print "Hello world!".
-    printline!("Hello world!");
+    println!("Hello world!");
 }
diff --git a/exercises/01_variables/variables1.rs b/exercises/01_variables/variables1.rs
index f83b44d..ec1bcac 100644
--- a/exercises/01_variables/variables1.rs
+++ b/exercises/01_variables/variables1.rs
@@ -1,6 +1,6 @@
 fn main() {
     // TODO: Add the missing keyword.
-    x = 5;
+    let x = 5;
 
     println!("x has the value {x}");
 }
diff --git a/exercises/01_variables/variables2.rs b/exercises/01_variables/variables2.rs
index e2a3603..fb16c0b 100644
--- a/exercises/01_variables/variables2.rs
+++ b/exercises/01_variables/variables2.rs
@@ -1,6 +1,6 @@
 fn main() {
     // TODO: Change the line below to fix the compiler error.
-    let x;
+    let x: i32 = 0;
 
     if x == 10 {
         println!("x is ten!");
diff --git a/exercises/01_variables/variables3.rs b/exercises/01_variables/variables3.rs
index 06f35bb..cdc137a 100644
--- a/exercises/01_variables/variables3.rs
+++ b/exercises/01_variables/variables3.rs
@@ -1,6 +1,6 @@
 fn main() {
     // TODO: Change the line below to fix the compiler error.
-    let x: i32;
+    let x: i32 = 0;
 
-    println!("Number {x}");
+    println!("Number {}", x);
 }
diff --git a/exercises/01_variables/variables4.rs b/exercises/01_variables/variables4.rs
index 6c138b1..90d4ef0 100644
--- a/exercises/01_variables/variables4.rs
+++ b/exercises/01_variables/variables4.rs
@@ -1,6 +1,6 @@
 // TODO: Fix the compiler error.
 fn main() {
-    let x = 3;
+    let mut x = 3;
     println!("Number {x}");
 
     x = 5; // Don't change this line
diff --git a/exercises/01_variables/variables5.rs b/exercises/01_variables/variables5.rs
index cf5620d..085e099 100644
--- a/exercises/01_variables/variables5.rs
+++ b/exercises/01_variables/variables5.rs
@@ -3,6 +3,6 @@ fn main() {
     println!("Spell a number: {number}");
 
     // TODO: Fix the compiler error by changing the line below without renaming the variable.
-    number = 3;
+    let number = 3;
     println!("Number plus two is: {}", number + 2);
 }
diff --git a/exercises/01_variables/variables6.rs b/exercises/01_variables/variables6.rs
index 4a040fd..deb33ed 100644
--- a/exercises/01_variables/variables6.rs
+++ b/exercises/01_variables/variables6.rs
@@ -1,5 +1,5 @@
 // TODO: Change the line below to fix the compiler error.
-const NUMBER = 3;
+const NUMBER: i32 = 3;
 
 fn main() {
     println!("Number: {NUMBER}");