Introduction
I have used Code::blocks 12 compiler for debugging purpose. But you can use any C programming language compiler as per your availability.
Write C program to check palindrome number using recursion
#include <stdio.h>
#include <math.h>
// Function declarations
int reverseNumber(int num);
int isPalindrome(int num);
int main()
{
int num;
// Inputting any number from user
printf("Enter any number: ");
scanf("%d", &num);
if(isPalindrome(num) == 1)
{
printf("%d is palindrome number.\n", num);
}
else
{
printf("%d is NOT palindrome number.\n", num);
}
return 0;
}
int isPalindrome(int num)
{
if(num == reverseNumber(num))
{
return 1;
}
return 0;
}
int reverseNumber(int num)
{
// Finding number of digits in num
int digit = (int)log10(num);
if(num == 0)
return 0;
return ((num%10 * pow(10, digit)) + reverseNumber(num/10));
}
Result
