#include <string.h>

/*
 * Make a string in 'to' which is the same characters as in the string 'from'
 * but in the opposite order.  The area pointed to by 'to' must be as large as
 * required to hold the string in 'from'.
 */
void reverse(char *from, char *to)
{
    to += strlen(from);
    *to = '\0';
    for (to--; *from; from++, to--)
	*to = *from;
}