how to check the number is palindrome or not

To check if a number is a palindrome in C++, you can follow these steps:

1. Declare and initialize the variables: number, revNumber, and originalNumber.
2. number: This variable will store the original number that you want to check.
3. revNumber: This variable will store the reverse of the original number.

4. originalNumber: This variable will store the original number to compare with the reverse.

5. Read the number from the user.

6. Initialize originalNumber with the value of number.

7. Use a while loop to reverse the number:

8. Initialize revNumber as 0.
9. In each iteration, extract the last digit of the number using the modulo operator (%).
10. Multiply revNumber by 10 and add the extracted digit to it.
11. Divide the number by 10 to remove the last digit.

12. Repeat the above three steps until the number becomes 0.

13. Compare originalNumber with revNumber:

14. If they are equal, print that the number is a palindrome.
15. If they are not equal, print that the number is not a palindrome.

Here is an example code snippet that implements the above steps:

#include <iostream>

int main() {
    int number, revNumber = 0, originalNumber;

    std::cout << "Enter a number: ";
    std::cin >> number;

    originalNumber = number;

    while (number != 0) {
        int digit = number % 10;
        revNumber = revNumber * 10 + digit;
        number /= 10;
    }

    if (originalNumber == revNumber) {
        std::cout << "The number is a palindrome." << std::endl;
    } else {
        std::cout << "The number is not a palindrome." << std::endl;
    }

    return 0;
}

This code prompts the user to enter a number, reverses it, and then compares the reversed number with the original number to determine if it is a palindrome or not.