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/*
* Copyright (c) 2012 Jan Klemkow <j.klemkow@wemelug.de>
* Copyright (c) 2012 Benjamin Franzke <benjaminfranzke@googlemail.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
enum {COORPERATION, DEFECTION};
int pay(int a, int b)
{
if (a == COORPERATION && b == DEFECTION) return 1;
if (a == DEFECTION && b == DEFECTION) return 2;
if (a == COORPERATION && b == COORPERATION) return 3;
if (a == DEFECTION && b == COORPERATION) return 4;
exit(EXIT_FAILURE);
}
int main(int argc, char **argv)
{
int a_payment = 0, b_payment = 0;
int a, b, a_old = -1;
for (;;) {
/* human input */
a = getc(stdin);
fpurge(stdin);
a = (a == 'c') ? COORPERATION : DEFECTION;
/* computer rules */
b = (a_old == -1) ? COORPERATION : a_old;
a_payment += pay(a, b);
b_payment += pay(b, a);
printf("A: %d Euro\tB: %d Euro\t\t\tA: %d\tB: %d\n",
pay(a, b), pay(b, a), a_payment, b_payment);
/* save the last human decision */
a_old = a;
}
return EXIT_SUCCESS;
}
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