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Solution Review: Find out if the Given Number is a Palindrome

Explore how to check if a number is a palindrome by reversing it using while loops in C++. This lesson helps you understand the step-by-step process of extracting digits, forming the reverse number, and comparing it to the original to complete the palindrome test effectively.

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Solution

C++
#include <iostream>
using namespace std;
int main() {
  // Initialize variable
  int number = 2002;
  int remainder = 0, reverse = 0;
  // To reverse a number store it in temp
  int temp = number;
  // while loop
  while (temp != 0) {
    // Get the last digit of temp
    remainder = temp % 10;
    // Store the remainder after the initially stored value in reverse
    reverse = reverse * 10 + remainder;
    // Remove the last digit of temp
    temp = temp / 10;
  }
  // if condition
  if (number == reverse) {
    cout << "is palindrome";
  } else {
    cout << "not a palindrome";
  }
  return 0;
}
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