#include <stdio.h>
#include <string.h>

int main()
{
    extern void playwith(char *s);
    playwith("fred");
    playwith("otto");
    playwith("Madam, I'm Adam");
    playwith("madamimadam");
    return 0;
}


void playwith(char *s)  /* s must be a string with length < 50 */
{
    char to[50];
    extern void reverse(char *from, char *to);
    extern int palindrome(char *s);

    reverse(s, to);
    printf("%s reversed is %s\n", s, to);
    printf("It %s a palindrome\n\n",
	    palindrome(s) ? "is" : "isn't");
}