Fix variable redeclaration and update function call in percentage conversion

Author: AkliluMihtsun

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

@@ -1,20 +1,32 @@
 // Predict and explain first...
 
 // Why will an error occur when this program runs?
-// =============> write your prediction here
+// I predict the code will generate 2 errors because one the variable decimalNumber is declared twice and two
+// the function is not called instead the variable decimalNumber is called and it can't be accessed because
+// it was declared locally as a parameter of the function
 
 // Try playing computer with the example to work out what is going on
 
-function convertToPercentage(decimalNumber) {
+/*function convertToPercentage(decimalNumber) {
   const decimalNumber = 0.5;
   const percentage = `${decimalNumber * 100}%`;
 
   return percentage;
 }
 
-console.log(decimalNumber);
+console.log(decimalNumber);*/
 
-// =============> write your explanation here
+// After we run the code, it generated an error SyntaxError: Identifier 'decimalNumber' has already been declared
+// because we tried to declare decimalNumber again. After fixing this error again we got another error ReferenceError: decimalNumber is not defined
+// because the decimalNumber is locally scoped, javascript can't access it when the function is called
+// additionally the function was not called  console.log(decimalNumber) this simply means print the value of decimalNumber
 
 // Finally, correct the code to fix the problem
-// =============> write your new code here
+// Here is the fixed code
+function convertToPercentage(decimalNumber) {
+  const percentage = `${decimalNumber * 100}%`;
+
+  return percentage;
+}
+
+console.log(convertToPercentage(0.5));