Change a literal numerical value as parameter for a variable expect by a function

Author: carlosyabreu

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

@@ -4,17 +4,31 @@
 // this function should square any number but instead we're going to get an error
 
 // =============> write your prediction of the error here
+// This code will throw a SyntaxError because function parameters must be valid variable names,
+// not literal values like 3.
 
+/**
 function square(3) {
     return num * num;
 }
+*/
 
 // =============> write the error message here
+// SyntaxError: Unexpected number
+// (or "SyntaxError: Unexpected token '3'" depending on the environment)
 
 // =============> explain this error message here
-
+// The error occurs because JavaScript expects a variable name (like num or x) inside the parentheses 
+// of a function definition. You cannot use a number (3) as a parameter name — it’s not a valid identifier.
+// Function parameters act as variable placeholders for input values, so they must follow variable naming rules.
+//
 // Finally, correct the code to fix the problem
 
 // =============> write your new code here
 
+function square(num) {
+    return num * num;
+}
+
+console.log(square(3)); // Output: 9