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

/* [note to TAs: stdio for printf(), string for str*(), stdlib for exit()] */

/*
 * palindrome returns true if the argument string contains the same sequence
 * of characters backwards as it does forwards.
 */
int palindrome(char *s)
{
    char t[100];
    extern void reverse(char *from, char *to);
    if (strlen(s) >= 100) {
	printf("some useless error message\n");
	exit(1);
    }
    reverse(s, t);
    return (strcmp(s, t) == 0);
}