Fix % conversion

Author: Frumentius-Rev

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
+// Because decimalNumber is declared twice, once as a parameter and again with const
 
 // Try playing computer with the example to work out what is going on
 
+/*
+
 function convertToPercentage(decimalNumber) {
   const decimalNumber = 0.5;
   const percentage = `${decimalNumber * 100}%`;
 
   return percentage;
 }
 
-console.log(decimalNumber);
+console.log(convertToPercentage(decimalNumber)); */
 
-// =============> write your explanation here
+// decimalNumber is already a parameter, so declaring it again with const causes an error
+// decimalNumber has already been declared as a parameter in the same function scope
+// console.log(decimalNumber) is wrong because decimalNumber is not defined outside the function,
+// so we need to call the function with a value
 
 // Finally, correct the code to fix the problem
-// =============> write your new code here
+
+function convertToPercentage(decimalNumber) {
+  const percentage = `${decimalNumber * 100}%`;
+
+  return percentage;
+}
+
+console.log(convertToPercentage("26"));