C Program to check Check if a Number is a Palindrome
Subject: PPS (Programming for Problem Solving)
Contributed By: Sanjay
Created At: February 3, 2025
Question:
Write a Check if a Number is a Palindrome.
Explanation Video:
Explanation:
Palindrome:
- A palindrome is a number that reads the same forward and backward.
- We reverse the number and compare it with the original.
Loop Explanation: - Extract each digit and reverse the number.
- Compare original and reversed values.
Source Code:
#include <stdio.h>
int main() {
int num, reversed = 0, remainder, original;
printf("Enter a number: ");
scanf("%d", &num);
original = num; // Store the original number
while (num != 0) {
remainder = num % 10;
reversed = reversed * 10 + remainder;
num /= 10;
}
if (original == reversed)
printf("%d is a palindrome.\n", original);
else
printf("%d is not a palindrome.\n", original);
return 0;
}
Input:
Input 1 (Palindrome Number):
Enter a number: 121
Input 2 (Not a Palindrome):
Enter a number: 123
Output:
Output 1:
121 is a palindrome.
Output 2:
123 is not a palindrome.