C语言如何实现洗牌发牌小程序

#include <stdio.h>
#include <time.h>
#include <stdlib.h>
 
#define NUM 10000 //洗牌混乱度
 
char color[7][7] = {"空白","红桃","黑桃","草花","方片","小王","大王"}; // 1:红桃 2:黑桃 3:草花 4:方片 5:小王 6:大王
char number[]={"0A234567890JQK"}; // 0:不存内容 1:A 2:2 3:3 4:4 5:5 6:6 7:7 8:8 9:9 10:10 11:J 12:Q 13:K
 
//构建扑克
struct card{
  unsigned int number;
  unsigned int color;
};
 
unsigned int NUM_card=53; //剩余未发的牌数(发牌时用的变量)
 
struct card card[54]; //创建保存一副牌的结构体
 
 
//构建一副牌(有序)
void creat_pair_card()
{
  int num=1;
  int col=1;
  int i=0;
  for(num=1;num<=15;num++)
  {
    //生成大小王
    if(num>=14)
    {
      card[i].number=num;
      card[i].color=col++;
      i++;
    }
    else
    {
      //生成普通牌
      for(col=1;col<=4;col++)
      {
        card[i].number=num;
        card[i].color=col;
        i++;
      }
    }
  }
}
 
//显示一副牌
void print_card()
{
  int i;  
  int num,col; //点数与花色对应数组下标
  for(i=0;i<54;i++)
  {
    col=card[i].color;
    num=card[i].number;
    if(col>=5)
    {
      printf("%s\t",color[col]);
    }
    else
    {
      if(num==10)
      {
        printf("%s:",color[col]);
        printf("10\t");
      }
      else
      {
        printf("%s:",color[col]);
        printf("%c\t",number[num]);
      }
    } 
  }
  printf("\n");
}
 
 
//洗牌
void wash_card()
{
  int i;
  int ch2,ch3;
  srand((unsigned)time(NULL));
  for(i=0;i<NUM;i++) //循环次数越大越乱
  {
    
    
    ch2=rand()%100; //2147483647 取最后两位0-99
    ch3=rand()%100;
    
 
    if(ch2>53)
    {
      ch2=100-ch2; //随机数大于53则减小
    }
 
    if(ch3>53)
    {
      ch3=100-ch3;
    }
 
    if(ch2 == ch3)
    {
      continue;
    }
    //两个随机牌交换
    struct card tmp=card[ch2];
    card[ch2]=card[ch3];
    card[ch3]=tmp;
  }
}
 
//发牌
void send_card(struct card hand[],int num)
{
  if(NUM_card<num)
  {
    printf("数量不足\n");
    return;
  }
  int i;
  for(i=0;i<num;i++)
  {
    hand[i]=card[NUM_card-i];
  }
  NUM_card=NUM_card-num;
}
 
 
//显示手牌
void print_hand_card(struct card hand[],int num)
{
  int i;
  int point,col;
  for(i=0;i<num;i++)
  {
    col=hand[i].color;
    point=hand[i].number;
    if(col>=5)
    {
      printf("%s ",color[col]);
    }
    else
    {
      if(point==10)
      {
        printf("%s:",color[col]);
        printf("10 ");
      }
      else
      {
        printf("%s:",color[col]);
        printf("%c ",number[point]);
      }
    } 
  }
  printf("\n");
}
 
 
int main(void)
{
 
  creat_pair_card(); //创建一副牌 有序
  wash_card();//洗牌
  print_card();//打印
 
  struct card hand1[17]; //创建两个结构体保存手牌17张
  struct card hand2[17];
  send_card(hand1,17); //发牌
  send_card(hand2,17);
  printf("手牌A: ");
  print_hand_card(hand1,17);
  printf("\n");
  printf("手牌B: ");
  print_hand_card(hand2,17);
  printf("\n");
}