C-Code

/*****************************************************
 * spock.c   Spiel Stein, Papier, Schere, Echse, Spock
 *****************************************************/
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <time.h>

#define NUM_OBJ 5

typedef struct _rule {
	int first;
	int second;
	int winner;
	int action;
} rule_t;

char symbols[][8] = {
	"Schere", "Papier", "Stein", "Echse", "Spock" };

char actions[][16] = {
	"schneidet", "bedeckt", "schleift", "zerquetscht", "vergiftet", 
	"zertrümmert", "köpft", "frisst", "widerlegt", "verdampft" };

rule_t rules[NUM_OBJ][NUM_OBJ] = { 
	{ {0,0,-1,0}, {0,1,0,0}, {2,0,2,2}, {0,3,0,6}, {4,0,4,5} },
	{ {0,1,0,0},  {0,0,-1,0},{1,2,1,1},	{3,1,3,7}, {1,4,1,8} },
	{ {2,0,2,2},  {1,2,1,1}, {0,0,-1,0},{2,3,2,3}, {4,2,4,9} },
	{ {0,3,0,6},  {3,1,3,7}, {2,3,2,3}, {0,0,-1,0},{3,4,3,4} },
	{ {4,0,4,5},  {1,4,1,8}, {4,2,4,9},	{3,4,3,4}, {0,0,-1,0}}
};
	
int main(void) {
	char input[3];
	int iuser, icomp;
	int in, n;

	/* Auswahl User */
    printf("Wähle ein Symbol:\n");
	for (n = 0; n<NUM_OBJ; n++)
	  printf("%2d %s\n", n+1, symbols[n]);
	do {
		printf("Auswahl: ");
		fgets(input, 3, stdin);
		in = atoi(input);
	} while (in < 1 || in> NUM_OBJ);
	iuser = in-1;
	
	/* Auswahl Computer */
    printf("\nDer Computer wählt jetzt zufällig ein Symbol: ");
	srandom(time(NULL));
	icomp = (int)(random()*(NUM_OBJ+0.1)/RAND_MAX);
	printf("%s\n", symbols[icomp]);

	/* Ergebnis */	
	sleep(1);
	printf("\n%s gegen %s: ", symbols[iuser], symbols[icomp]);
	if (rules[iuser][icomp].winner < 0)
	  printf("Unentschieden!\n");
	else {
	  printf("%s %s %s.\n", symbols[rules[iuser][icomp].first], 
						    actions[rules[iuser][icomp].action], 
						    symbols[rules[iuser][icomp].second]);
	  printf("The winner is *%s* (%s).\n", 
			symbols[rules[iuser][icomp].winner], 
			(rules[iuser][icomp].winner == iuser)?"Du":"Computer");
	}
	return 0;
}