JavaScript Program to Check if the Numbers Have Same Last Digit

In this example, you will learn to write a program that checks whether the last digit of three numbers is the same or not in JavaScript.

To understand this example, you should have the knowledge of the following JavaScript programming topics:


Example: Check the Last Digit

/* program to check whether the last digit of three
numbers is same */

// take input
let a = prompt('Enter a first integer: ');
let b = prompt('Enter a second integer: ');
let c = prompt('Enter a third integer: ');

// find the last digit
let result1 = a % 10;
let result2 = b % 10;
let result3 = c % 10;

// compare the last digits
if(result1 == result2 && result1 == result3) {
    console.log(`${a}, ${b} and ${c} have the same last digit.`);
}
else {
    console.log(`${a}, ${b} and ${c} have different last digit.`);
}

Output

Enter a first integer: 8
Enter a second integer: 38
Enter a third integer: 88
8, 38 and 88 have the same last digit.

In the above example, the user is asked to enter three integers.

The three integer values are stored in variables a, b and c.

The last digit of an integer value is calculated using a modulus operator %.

% gives the remainder value. For example, 58 % 10 gives 8.

All the last digits are then compared using if..else statement and logical AND operator && operator.