C Program to Check Whether a Number is Palindrome or Not:
This program reverses an integer (entered by the user) using while loop. Then, if statement is used to check whether the reversed number is equal to the original number or not.
#include <stdio.h>
int main()
{
int n, reversedInteger = 0, remainder, originalInteger;
printf("Enter an integer: ");
scanf("%d", &n);
originalInteger = n;
// reversed integer is stored in variable
while( n!=0 )
{
remainder = n%10;
reversedInteger = reversedInteger*10 + remainder;
n /= 10;
}
// palindrome if orignalInteger and reversedInteger are equal
if (originalInteger == reversedInteger)
printf("%d is a palindrome.", originalInteger);
else
printf("%d is not a palindrome.", originalInteger);
return 0;
}
Output Enter an integer: 1001 1001 is a palindrome.