發牌

/*********************************************************

 * From C PROGRAMMING: A MODERN APPROACH, by K. N. King  *

 * Copyright (c) 1996 W. W. Norton & Company, Inc.       *

 * All rights reserved.                                  *

 * This program may be freely distributed for class use, *

 * provided that this copyright notice is retained.      *

 *********************************************************/

/* deal.c (Chapter 8, page 150) */

/* Deals a random hand of cards */

/*發牌*/

#include <stdio.h>

#include <stdlib.h>

#include <time.h>

#define NUM_SUITS 4   //4個花色

#define NUM_RANKS 13  //每個花色13張牌

#define TRUE 1

#define FALSE 0

typedef int Bool;  //定義新資料類型Bool

main()

{

  Bool in_hand[NUM_SUITS][NUM_RANKS] = {0}; //定義二維數組in_hand 4行13列

  int num_cards, rank, suit;

  const char rank_code[] = {'2','3','4','5','6','7','8',

                            '9','t','j','q','k','a'};  //數組中存13牌

  const char suit_code[] = {'c','d','h','s'};  //數組中存4個花色

  // c,d,h,s代表梅花、紅桃 、方片 、黑桃四種花色

  //聲明為const的數組不能進行修改

  srand((unsigned) time(NULL));

  //srand函數：初始化C語言的随機數生成器，通過把time函數的傳回值傳遞給srand這種方法

  //可以避免程式在每次運作時發同樣的牌

  printf("Enter number of cards in hand: ");

  scanf("%d", &num_cards);

  printf("Your hand:");

  while (num_cards > 0) {

    suit = rand() % NUM_SUITS;     /* picks a random suit */

    rank = rand() % NUM_RANKS;     /* picks a random rank */

    if (!in_hand[suit][rank]) {

      in_hand[suit][rank] = TRUE;  //避免重複選擇同一花色的牌

      num_cards--;  //這裡是循環條件

      printf(" %c%c", rank_code[rank], suit_code[suit]);//輸出每次随機産生的牌

    }

  }

  printf("\n");

  return 0;

}

本文轉自dllglvzhenfeng51CTO部落格，原文連結：http://blog.51cto.com/1443208/313597，如需轉載請自行聯系原作者