5 files changed, 7 insertions, 13 deletions
diff --git a/rustlings/exercises/02_functions/functions1.rs b/rustlings/exercises/02_functions/functions1.rs
index a812c21..5dbae07 100644
--- a/rustlings/exercises/02_functions/functions1.rs
+++ b/rustlings/exercises/02_functions/functions1.rs
@@ -1,4 +1,6 @@
-// TODO: Add some function with the name `call_me` without arguments or a return value.
+fn call_me() {
+    println!("call_me()");
+}
 
 fn main() {
     call_me(); // Don't change this line
diff --git a/rustlings/exercises/02_functions/functions2.rs b/rustlings/exercises/02_functions/functions2.rs
index 2c773c6..27f2cc7 100644
--- a/rustlings/exercises/02_functions/functions2.rs
+++ b/rustlings/exercises/02_functions/functions2.rs
@@ -1,5 +1,4 @@
-// TODO: Add the missing type of the argument `num` after the colon `:`.
-fn call_me(num:) {
+fn call_me(num: u32) {
     for i in 0..num {
         println!("Ring! Call number {}", i + 1);
     }
diff --git a/rustlings/exercises/02_functions/functions3.rs b/rustlings/exercises/02_functions/functions3.rs
index 8d65477..88dff5b 100644
--- a/rustlings/exercises/02_functions/functions3.rs
+++ b/rustlings/exercises/02_functions/functions3.rs
@@ -5,6 +5,5 @@ fn call_me(num: u8) {
 }
 
 fn main() {
-    // TODO: Fix the function call.
-    call_me();
+    call_me(3);
 }
diff --git a/rustlings/exercises/02_functions/functions4.rs b/rustlings/exercises/02_functions/functions4.rs
index b22bffd..2c5a3b0 100644
--- a/rustlings/exercises/02_functions/functions4.rs
+++ b/rustlings/exercises/02_functions/functions4.rs
@@ -1,14 +1,9 @@
-// This store is having a sale where if the price is an even number, you get 10
-// Rustbucks off, but if it's an odd number, it's 3 Rustbucks off.
-// Don't worry about the function bodies themselves, we are only interested in
-// the signatures for now.
-
 fn is_even(num: i64) -> bool {
     num % 2 == 0
 }
 
 // TODO: Fix the function signature.
-fn sale_price(price: i64) -> {
+fn sale_price(price: i64) -> i64 {
     if is_even(price) {
         price - 10
     } else {
diff --git a/rustlings/exercises/02_functions/functions5.rs b/rustlings/exercises/02_functions/functions5.rs
index 34a2ac7..024010f 100644
--- a/rustlings/exercises/02_functions/functions5.rs
+++ b/rustlings/exercises/02_functions/functions5.rs
@@ -1,6 +1,5 @@
-// TODO: Fix the function body without changing the signature.
 fn square(num: i32) -> i32 {
-    num * num;
+    num * num
 }
 
 fn main() {