1.js

// Predict and explain first...

// Why will an error occur when this program runs?
// =============> write your prediction here - It will throw a syntax error

// 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);

// =============> write your explanation here - We cannot redeclare decimalNumber in the function since it is already a parameter

// 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 (0.5));