fix function square code error

Author: abmhts

Sprint-3/1-key-errors/2.js

@@ -1,20 +1,27 @@
 
 // Predict and explain first BEFORE you run any code...
-
+    
 // this function should square any number but instead we're going to get an error
+    //we are giving a value for the input  instead of name that can hold different values.
 
 // =============> write your prediction of the error here
+    //syntaxerror related to the function input "(3)"
 
-function square(3) {
-    return num * num;
-}
+// function square(3) {
+//     return num * num;
+// }
 
 // =============> write the error message here
 
 // =============> explain this error message here
-
+    // we gave a placeholder for the function instead of value that can't be changed.
 // Finally, correct the code to fix the problem
 
 // =============> write your new code here
 
 
+function square(num) {
+    return num * num;
+}
+
+console.log(square(3));