questions answered and code rewritten

Author: AdnaanA

Sprint-2/1-key-errors/0.js

@@ -1,13 +1,29 @@
 // Predict and explain first...
 //  =============> write your prediction here
+// the code will throw an error because the variable str is being declared twice within the same scope
 
 // call the function capitalise with a string input
 // interpret the error message and figure out why an error is occurring
 
+/*
 function capitalise(str) {
   let str = `${str[0].toUpperCase()}${str.slice(1)}`;
   return str;
 }
 
-// =============> write your explanation here
-// =============> write your new code here
+*/
+
+// =============> write your explanation 
+/* the code throws a SyntaxError because the variable 'str' is declared twice in the same scope using 'let'. In JavaScript, 
+ you cannot declare a variable with the same name more than once in the same scope. The first declaration of 'str' is as a 
+ function parameter, and the second declaration is within the function body. To fix this, you can either rename the second 
+ 'str' variable or remove the 'let' keyword from the second declaration to reassign the value to the existing parameter variable.*/
+
+ // =============> write your new code here
+
+function capitalise(str) {
+  str = `${str[0].toUpperCase()}${str.slice(1)}`;
+  return str;
+}
+
+console.log(capitalise("hello")); // Output: "Hello"