2.js

// Predict and explain first...

// Predict the output of the following code:
// =============> Write your prediction here
/* I predict that the three call are giving 
The last digit of 42 is 2
The last digit of 105 is 5
The last digit of 806 is 6    */

/*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
/* because the num is determined at fires and 103 is given to the num. as a result we see the same result.*/
// 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