c实战记录持续更新

#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
/*商品结构*/
typedef struct _sp {
  int djid;     //道具的编号
  char name[50];    //道具名称
  double price;   //道具单价
  int stock;      //库存量
  char desc[100];   //道具的功能描述
}SP;
/*背包结构*/
typedef struct _bb {
  int wjid;     //玩家编号
  int count;      //道具数量
  int max;      //背包最大位
  SP prs[8];      //背包中的道具数组
}BB;  
/*玩家结构*/
typedef struct _wj{
  int id;       //玩家编号
  char name[50];    //用户名
  char pass[50];    //密码
  BB bbao;      //玩家的背包
  double gold;    //玩家金币
  double yuanbao;   //玩家元宝
}WJ;
SP* spzz=NULL;
WJ* wjzz=NULL;
int sps=0;
int wjs=0;
void init();
void showsp();
void showwj();
void jy(WJ *wj,int spid );//交易函数参数1参与交易的玩家指针 方便修改金币 参数2玩家购买的商品ID
int main()
{
  //初始化游戏数据
  init();
  showsp();
  showwj();
  system("pause");
  jy(&wjzz[1],3);
  showsp();
  showwj();
  return 0;
}
void jy(WJ* wj, int spid)
{
  int i;
  SP* pdzz = NULL;  
  //判断：玩家的商品的库存，玩家的余额，玩家背包空间
  
  for (i = 0; i< spid; i++) {
    if (spid == spzz[i].djid)
    {
      pdzz = &spzz[i];
      break;
    }
  }
  if (pdzz->stock <= 0)
  {
    printf("库存不足\n");
    return;
  }
  if (wjzz->gold < pdzz->price)
  {
    printf("余额不足\n");
    return;
  }
  if (wjzz->bbao.count >= wjzz->bbao.max&& wjzz->bbao.count!=0)
  {
    printf("背包已满，交易失败！\n");
    return;
  }
  //1商品数-1 
  pdzz->stock--;
  //2玩家金币-商品单价
  wjzz->gold -= pdzz->price;
  //3玩家背包道具+1
  //判断玩家背包中是否有该商品
  
  //如果有该商品数+1
  for (i = 0; i < wjzz->bbao.count; i++)
  {
    if (pdzz == wjzz->bbao.prs[i].djid)
    {
      wjzz->bbao.prs[i].stock++;
      break;
    }
  }
  //如果没有就添加到背包中
  if (i == wjzz->bbao.count)
  {
    int djwz = wjzz->bbao.count;
    //向背包中创建一个商品
    wjzz->bbao.prs[djwz].djid = pdzz->djid;
    wjzz->bbao.prs[djwz].price = pdzz->price;
    wjzz->bbao.prs[djwz].stock = 1;
    strcpy(wjzz->bbao.prs[djwz].name, pdzz->name);
    strcpy(wjzz->bbao.prs[djwz].desc, pdzz->desc);
    wjzz->bbao.count++;
  }
}
void init()
{
  static SP SPall[] = {
    {1,"经验卡",3000,10,"双倍经验"},
    {2,"龙泉剑",7000,8,"攻击带魔法伤害200+"},
    {3,"轩辕剑",6000,6,"攻击力+200"},
    {4,"复活甲",9000,2,"60秒复活一次"},
    {5,"饮血剑",8000,3,"吸血+200"},
  };
  sps = sizeof(SPall)/sizeof(SP);
  spzz = SPall;
  static WJ WJall[] = {
    {1,"张三","123456",.gold = 50000,.bbao.max=8},
    {2,"李四","123456",.gold = 150000,.bbao.max = 8},
    {3,"王五","123456",.gold = 5000,.bbao.max = 8},
    {4,"刘六","123456",.gold = 0,.bbao.max = 8},
  };
  wjs = sizeof(WJall) / sizeof(WJ);
  wjzz = WJall;
}
void showsp()
{ 
  int i;
  if (spzz == NULL) return; 
    printf("编号\t名称\t单价\t库存\t商品介绍\n");
  for (i = 0;i<sps;i++)
  {
    printf("%d\t%s\t%.2lf\t%d\t%s\n",spzz[i].djid,spzz[i].name,spzz[i].price,spzz[i].stock,spzz[i].desc);
  }
}
void showwj()
{
  int i,j;
  if (wjzz == NULL)return;
  printf("编号\t名称\t金币\n");
  for (i = 0; i < wjs; i++)
  {
    printf("%d\t%s\t%.2lf\n", wjzz[i].id, wjzz[i].name, wjzz[i].gold);
    for (j = 0; j < wjzz[i].bbao.count;j++) {
      printf("%s\t%d", wjzz[i].bbao.prs[j].name, wjzz[i].bbao.prs[j].stock);

    }
    printf("\n");
  }
  
}