2.js

// Predict and explain first...

// Predict the output of the following code:
// =============> Write your prediction here
// The output will always be 3.This is because the function uses the variable `num`,
// which is set to 103.
// const num = 103;

// function getLastDigit() {
// return num.toString().slice(-1);
// }

// console.log(`The last digit of 42 is ${getLastDigit(42)}`);
// console.log(`The last digit of 105 is ${getLastDigit(105)}`);
// console.log(`The last digit of 806 is ${getLastDigit(806)}`);

// Now run the code and compare the output to your prediction
// =============> write the output here

// The last digit of 42 is 3
// The last digit of 105 is 3
// The last digit of 806 is 3

// Explain why the output is the way it is
// =============> write your explanation here

// The output is always 3 because the function uses `num` (103),and ignores the number passed into it.
// Finally, correct the code to fix the problem

// =============> write your new code here

function getLastDigit(num) {
  return num.toString().slice(-1);
}

console.log(`The last digit of 42 is ${getLastDigit(42)}`);
console.log(`The last digit of 105 is ${getLastDigit(105)}`);
console.log(`The last digit of 806 is ${getLastDigit(806)}`);



// This program should tell the user the last digit of each number.
// Explain why getLastDigit is not working properly - correct the problem
// We must pass the number into the function as a parameter.