给一手牌分类

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/*
* 给一手牌分类修改(一）.c
*
* Created on: 2016年12月1日
* Author: PC
*/
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>

#define NUM_RANKS 13
#define NUM_SUITS 4
#define NUM_CARDS 5

/*prototypes */
void read_cards(int num_in_rank[],int num_in_suit[]);
void analyze_hand(int num_in_rank[],int num_in_suit[]);
void print_result(void);

/*external variables */

bool straight,flush,four,three;
int pairs; /* can be 0,1,or2 */

int main(void)
{
int num_in_rank[NUM_RANKS];
int num_in_suit[NUM_SUITS];
for(;;){
  read_cards(num_in_rank,num_in_suit);
  analyze_hand(num_in_rank,num_in_suit);
  print_result();
}
}

void read_cards(int num_in_rank[],int num_in_suit[])
{
bool card_exists[NUM_RANKS][NUM_SUITS];
char ch,rank_ch,suit_ch;
int rank,suit;
bool bad_card;
int cards_read = 0;

for (rank = 0;rank < NUM_RANKS;rank++){
  num_in_rank[rank] = 0;
  for (suit = 0;suit < NUM_SUITS;suit++)
   card_exists[rank][suit]=false;
}

for (suit = 0;suit < NUM_SUITS;suit++)
num_in_suit[suit] = 0;

while (cards_read < NUM_CARDS) {
bad_card = false;

printf("enter a card:");

  rank_ch = getchar();
  switch(rank_ch)
  {
  case'0':     exit(EXIT_SUCCESS);
  case'2':     rank = 0;break;
  case'3':     rank = 1;break;
  case'4':     rank = 2;break;
  case'5':     rank = 3;break;
  case'6':     rank = 4;break;
  case'7':     rank = 5;break;
  case'8':     rank = 6;break;
  case'9':     rank = 7;break;
  case't':case'T':rank = 8;break;
  case'j':case'J':rank = 9;break;
  case'q':case'Q':rank = 10;break;
  case'k':case'K':rank = 11;break;
  case'a':case'A':rank = 12;break;
  default:        bad_card = true;
  }
  suit_ch = getchar();
  switch (suit_ch)
  {
  case'c':case'C':suit=0;break;
  case'd':case'D':suit=1;break;
  case'h':case'H':suit=2;break;
  case's':case'S':suit=3;break;
  default:        bad_card = true;
  }
  while((ch=getchar())!='\n')
   if(ch!=' ')bad_card=true;

  if(bad_card)
   printf("Bad card;ignored.\n");
  else if(card_exists[rank][suit])
   printf("Duplicate card;ignored.\n");
  else {
   num_in_rank[rank]++;
   num_in_suit[suit]++;
   card_exists[rank][suit]=true;
   cards_read++;
  }
}
}
void analyze_hand(int num_in_rank[],int num_in_suit[])
{
int num_consec=0;
int rank,suit;

straight=false;
flush=false;
four=false;
three=false;
pairs=0;

/*check for flush*/
for (suit=0;suit<NUM_SUITS;suit++)
  if(num_in_suit[suit] == NUM_CARDS)
   flush=true;
/*check for straight*/
rank=0;
while(num_in_rank[rank] == 0)rank++;
for (; rank <NUM_RANKS && num_in_rank[rank] >0;rank++)
  num_consec++;
if (num_consec == NUM_CARDS) {
  straight = true;
  return;
}
/*check for 4-of-a-kind,3-of-a-kind,and pairs */
for (rank = 0; rank < NUM_RANKS;rank++){
  if (num_in_rank[rank] == 4) four = true;
  if (num_in_rank[rank] == 3) three = true;
  if (num_in_rank[rank] == 2) pairs++;
}
}
void print_result(void)
{
if (straight && flush) printf("Straight flush");
else if (four)         printf("Four of a kind");
else if (three &&
   pairs == 1)    printf("Full house");
else if (flush)        printf("Flush");
else if (straight)     printf("Straight");
else if (three)        printf("Three of a kind");
else if (pairs == 2)   printf("Two pairs");
else if (pairs == 1)   printf("Pair");
else                   printf("High card");

printf("\n\n");

}

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