1.js

// Predict and explain first...


// Why will an error occur when this program runs?
// =============> write your prediction here

//1- The function is trying to declare the decimalNumber twice in the perameter and later as a new variable 
//2-console.log() is printing a variable in the local scope where it can't be accessed as it is inside the function 

// 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;
// }




// =============> write your explanation here
//similar to the previous exercise where the variable decimal Number has already been declared in the parameter 
// and already is a local variable which can't be declared again  
//As the decimalNumber inside the function we can't print it using the console.log() as it has no power to the local scope
//instead we can delete the second declaration and just leave the parameter as an input for the user which would be nicely work
// 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));