PALINDROME IN C WITHOUT USING STRING FUNCTION

  /* Program to Find Whether a Number is Palindrome or Not without
                        using String Functions */

 
main()
{
   int n, reverse = 0, temp;
 
   printf("Enter a number to check if it is a palindrome or not\n");
   scanf("%d",&n);
 
   temp = n;
 
   while( temp != 0 )
   {
      reverse = reverse * 10;
      reverse = reverse + temp%10;
      temp = temp/10;
   }
 
   if ( n == reverse )
      printf("%d is a palindrome number.\n", n);
   else
      printf("%d is not a palindrome number.\n", n);
 
   return 0;
}


  /* Program to Find Whether a String is Palindrome or Not without
                        using String Functions */

#include 
#include 
main()
{
   char s1[20];
   int i, j, len=0, flag=0;
   printf("\nEnter any string: ");
   gets(s1);
   for (i=0; s1[i]!='\0'; i++)
        len++;
   i = 0;
   j = len-1;
   while (i < len)
 {
        if (s1[i] != s1[j])
        {
              flag = 1;
              break;
        }
        i++;
        j--;
   }
   if (flag == 0)
        printf("\nString is palindrome");
   else
        printf("\nString is not palindrome");
   getch();
}