Palindrome

#include <stdio.h>
#include <string.h>
main()
{
   char a[100], b[100];
    printf("Enter the string to check if it is a palindrome\n");
gets(a);
    strcpy(b,a);
   strrev(b);
    if( strcmp(a,b) == 0 )
      printf("Entered string is a palindrome.\n");
   else
      printf("Entered string is not a palindrome.\n");
    return 0;
}

Output:
Enter the string to check if it is a palindrome:dada
Entered string is a palindrome.