3 files changed, 28 insertions, 34 deletions
diff --git a/exercises/03_if/if1.rs b/exercises/03_if/if1.rs
index 4734d78..e5a3c5a 100644
--- a/exercises/03_if/if1.rs
+++ b/exercises/03_if/if1.rs
@@ -1,16 +1,15 @@
-// if1.rs
-//
-// Execute `rustlings hint if1` or use the `hint` watch subcommand for a hint.
-
-// I AM NOT DONE
-
-pub fn bigger(a: i32, b: i32) -> i32 {
-    // Complete this function to return the bigger number!
+fn bigger(a: i32, b: i32) -> i32 {
+    // TODO: Complete this function to return the bigger number!
+    // If both numbers are equal, any of them can be returned.
     // Do not use:
     // - another function call
     // - additional variables
 }
 
+fn main() {
+    // You can optionally experiment here.
+}
+
 // Don't mind this for now :)
 #[cfg(test)]
 mod tests {
diff --git a/exercises/03_if/if2.rs b/exercises/03_if/if2.rs
index f512f13..593a77a 100644
--- a/exercises/03_if/if2.rs
+++ b/exercises/03_if/if2.rs
@@ -1,13 +1,5 @@
-// if2.rs
-//
-// Step 1: Make me compile!
-// Step 2: Get the bar_for_fuzz and default_to_baz tests passing!
-//
-// Execute `rustlings hint if2` or use the `hint` watch subcommand for a hint.
-
-// I AM NOT DONE
-
-pub fn foo_if_fizz(fizzish: &str) -> &str {
+// TODO: Fix the compiler error on this function.
+fn foo_if_fizz(fizzish: &str) -> &str {
     if fizzish == "fizz" {
         "foo"
     } else {
@@ -15,23 +7,29 @@ pub fn foo_if_fizz(fizzish: &str) -> &str {
     }
 }
 
-// No test changes needed!
+fn main() {
+    // You can optionally experiment here.
+}
+
+// TODO: Read the tests to understand the desired behavior.
+// Make all tests pass without changing them.
 #[cfg(test)]
 mod tests {
     use super::*;
 
     #[test]
     fn foo_for_fizz() {
-        assert_eq!(foo_if_fizz("fizz"), "foo")
+        // This means that calling `foo_if_fizz` with the argument "fizz" should return "foo".
+        assert_eq!(foo_if_fizz("fizz"), "foo");
     }
 
     #[test]
     fn bar_for_fuzz() {
-        assert_eq!(foo_if_fizz("fuzz"), "bar")
+        assert_eq!(foo_if_fizz("fuzz"), "bar");
     }
 
     #[test]
     fn default_to_baz() {
-        assert_eq!(foo_if_fizz("literally anything"), "baz")
+        assert_eq!(foo_if_fizz("literally anything"), "baz");
     }
 }
diff --git a/exercises/03_if/if3.rs b/exercises/03_if/if3.rs
index 1696274..89164eb 100644
--- a/exercises/03_if/if3.rs
+++ b/exercises/03_if/if3.rs
@@ -1,10 +1,5 @@
-// if3.rs
-//
-// Execute `rustlings hint if3` or use the `hint` watch subcommand for a hint.
-
-// I AM NOT DONE
-
-pub fn animal_habitat(animal: &str) -> &'static str {
+fn animal_habitat(animal: &str) -> &str {
+    // TODO: Fix the compiler error in the statement below.
     let identifier = if animal == "crab" {
         1
     } else if animal == "gopher" {
@@ -15,8 +10,8 @@ pub fn animal_habitat(animal: &str) -> &'static str {
         "Unknown"
     };
 
-    // DO NOT CHANGE THIS STATEMENT BELOW
-    let habitat = if identifier == 1 {
+    // Don't change the expression below!
+    if identifier == 1 {
         "Beach"
     } else if identifier == 2 {
         "Burrow"
@@ -24,12 +19,14 @@ pub fn animal_habitat(animal: &str) -> &'static str {
         "Desert"
     } else {
         "Unknown"
-    };
+    }
+}
 
-    habitat
+fn main() {
+    // You can optionally experiment here.
 }
 
-// No test changes needed.
+// Don't change the tests!
 #[cfg(test)]
 mod tests {
     use super::*;