key errors part is finished

Author: eminakturk

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

@@ -1,7 +1,8 @@
 // Predict and explain first...
+// program is made for converting a decimal number into a percentage.
 
 // Why will an error occur when this program runs?
-// =============> write your prediction here
+// =============> I think error would occur because decimalNumber is declared twice.
 
 // Try playing computer with the example to work out what is going on
 
@@ -14,7 +15,15 @@ function convertToPercentage(decimalNumber) {
 
 console.log(decimalNumber);
 
-// =============> write your explanation here
+// =============> to fix the problem I will remove the second declaration of decimalNumber and use the parameter instead.
 
 // Finally, correct the code to fix the problem
-// =============> write your new code here
+// =============> 
+function convertToPercentage(decimalNumber) {
+  const percentage = `${decimalNumber * 100}%`;
+
+  return percentage;
+} 
+
+// to call the function
+console.log(convertToPercentage(1)); // Output: "100%"

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

@@ -3,18 +3,24 @@
 
 // this function should square any number but instead we're going to get an error
 
-// =============> write your prediction of the error here
+// =============> My prediction is that error occurs because function trying to use a number as a function.
 
 function square(3) {
     return num * num;
 }
 
-// =============> write the error message here
+// =============> Expected identifier but found "3"
 
-// =============> explain this error message here
+// =============> While program waiting for an identifier, it found a number instead.
 
 // Finally, correct the code to fix the problem
 
-// =============> write your new code here
+// =============> 
+    function square(num) {
+        return num * num;
+    }
+
+    // to call the function
+    console.log(square(9)); // Output: 81