using MATCH AND ELSE

exercises/error_handling/errors3.rs

@@ -4,7 +4,7 @@
 // Why not? What should we do to fix it?
 // Execute `rustlings hint errors3` or use the `hint` watch subcommand for a hint.
 
-// I AM NOT DONE
+
 
 use std::num::ParseIntError;
 
@@ -12,16 +12,24 @@ fn main() {
     let mut tokens = 100;
     let pretend_user_input = "8";
 
-    let cost = total_cost(pretend_user_input)?;
+    //let cost = total_cost(pretend_user_input)?;
 
-    if cost > tokens {
-        println!("You can't afford that many!");
-    } else {
-        tokens -= cost;
-        println!("You now have {} tokens.", tokens);
+    match total_cost(pretend_user_input) {
+        Ok(cost) => {
+            if cost > tokens {
+                println!("You can't afford that many!");
+            } else {
+                tokens -= cost;
+                println!("You now have {} tokens.", tokens);
+            }
+        }
+        Err(err) => {
+            println!("Error: {}", err);
+        }
     }
 }
 
+
 pub fn total_cost(item_quantity: &str) -> Result<i32, ParseIntError> {
     let processing_fee = 1;
     let cost_per_item = 5;