Re: Program to deal 5 cards
 

In article <3EF5B834.7060706@sonic.net>, stevetux@sonic.net wrote:

>I'm trying to get a program to deal five cards to stdout, randomly
>picked from a deck of 52. My best efforts have earned me a segmentation
>fault.
>
>My big hang-up is how to avoid duplicating cards in the deal. Once
>I've dealt a card, how do I make sure that that same card is not dealt
>again?
>
>Here's my failed attempt; please help. I'm using s, c, d and h for
>spades, clubs, diamonds and hearts, respectively; A for ace, K for
>king, Q for queen, J for jack, T for ten. Cards two through nine
>are represented by their respective numerals (2 through 9).
>
>Once again, this program yields a seg fault.
>
>
>#include <stdio.h>
>#include <stdlib.h>
>#include <time.h>
>#include <string.h>
>
>int main()
>{
>
> int index, i;
> int how_many_dealt = 0;
> char *dealt_cards[5];

This should be changed to char dealt_cards[5][3]; because the pointers are
uninitialized, e.g. they are set to NULL.

> char picked_card[3];
>
> char *cards[] = {"As", "Ac", "Ad", "Ah", "Ks", "Kc", "Kd", "Kh",
> "Qs", "Qc", "Qd", "Qh", "Js", "Jc", "Jd", "Jh",
> "Ts", "Tc", "Td", "Th", "9s", "9c", "9d", "9h",
> "8s", "8c", "8d", "8h", "7s", "7c", "7d", "7h",
> "6s", "6c", "6d", "6h", "5s", "5c", "5d", "5h",
> "4s", "4c", "4d", "4h", "3s", "3c", "3d", "3h",
> "2s", "2c", "2d", "2h"
> };

This should be changed also to char cards[52][3]; because these are
initialized as read-only string literals.

>
> while (how_many_dealt < 5) {
> srand(time(NULL));
> index = rand() % 52;
>
> /* If the card has been Already Picked ("AP") */
> if (strcmp(cards[index], "AP") != 0) {
> strcpy(dealt_cards[how_many_dealt], cards[index]);
> how_many_dealt++;
> strcpy(cards[index], "AP");
> } else
> continue;
> }
>
> for (i = 0; i < 5; i++)
> printf("%s ", dealt_cards[i]);
>
> printf("\n");
>
> return 0;
>}

--
char*c="(&$'&%$&$#'$&$&$&$$$&$#&$'$&$($&$#%$'$$$%$ ((#%$'$$$%$($&$#$$'($$($&"
"$#$($&$$$&$$$&$#($$&$%&%$&$#",z,q=0,p=35;main(){f or(;q<8;c++,p^=35){if(*c==
35)++q&&puts("")&&(p=q<6?35:0);for(z=35;z++<*c;)pu tchar(p);}}/*Zach Wegner*/