working on rustlings

exercises/intro/intro1.rs

@@ -9,7 +9,7 @@
 // when you change one of the lines below! Try adding a `println!` line, or try changing
 // what it outputs in your terminal. Try removing a semicolon and see what happens!
 
-// I AM NOT DONE
+
 
 fn main() {
     println!("Hello and");

exercises/intro/intro2.rs

@@ -2,8 +2,11 @@
 // Make the code print a greeting to the world.
 // Execute `rustlings hint intro2` or use the `hint` watch subcommand for a hint.
 
-// I AM NOT DONE
+
 
 fn main() {
-    println!("Hello {}!");
+
+  let mut world = String::from("World");
+
+    println!("Hello {world}!");
 }

exercises/primitive_types/primitive_types1.rs

@@ -2,7 +2,7 @@
 // Fill in the rest of the line that has code missing!
 // No hints, there's no tricks, just get used to typing these :)
 
-// I AM NOT DONE
+
 
 fn main() {
     // Booleans (`bool`)
@@ -12,7 +12,7 @@ fn main() {
         println!("Good morning!");
     }
 
-    let // Finish the rest of this line like the example! Or make it be false!
+    let is_evening = true;// Finish the rest of this line like the example! Or make it be false!
     if is_evening {
         println!("Good evening!");
     }

exercises/primitive_types/primitive_types2.rs

@@ -2,7 +2,7 @@
 // Fill in the rest of the line that has code missing!
 // No hints, there's no tricks, just get used to typing these :)
 
-// I AM NOT DONE
+
 
 fn main() {
     // Characters (`char`)
@@ -18,7 +18,7 @@ fn main() {
         println!("Neither alphabetic nor numeric!");
     }
 
-    let // Finish this line like the example! What's your favorite character?
+    let your_character = 'S'; // Finish this line like the example! What's your favorite character?
     // Try a letter, try a number, try a special character, try a character
     // from a different language than your own, try an emoji!
     if your_character.is_alphabetic() {

exercises/primitive_types/primitive_types3.rs

@@ -2,10 +2,10 @@
 // Create an array with at least 100 elements in it where the ??? is.
 // Execute `rustlings hint primitive_types3` or use the `hint` watch subcommand for a hint.
 
-// I AM NOT DONE
+
 
 fn main() {
-    let a = ???
+    let a = [1; 100];
 
     if a.len() >= 100 {
         println!("Wow, that's a big array!");

exercises/variables/variables6.rs

@@ -8,3 +8,5 @@ const NUMBER: u32 = 3;
 fn main() {
     println!("Number {}", NUMBER);
 }
+
+