#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <string.h>
int exist_in(char *arr1[][2], char *arr2[], int length);//勝負判斷函數
void nextround (void);//本輪結束后的處理輪函數
enum {QUIT,OK} status;//標志位，QUIT=0,OK=1
int vcnt = 0,dcnt = 0,tcnt = 0;//數據統計
int main(void)
{
    int i = 0, length;
    time_t t;
    status = OK;
    char *person = (char *) malloc(100);//動態內存分配
    char *computer = (char *) malloc(100);
    char *computer_person[2];
    char *guess_arr[] = {"石頭", "剪刀", "布"};
    char *win[3][2] = {{"布", "石頭"}, {"石頭", "剪刀"}, {"剪刀", "布"}};   
    length = (int)sizeof(win)/(int)sizeof(win[0]);//此例中length=3
    while (status == OK)//標志位1,執行死循環
    {
        srand((unsigned) time(&t));
        i = rand() % 3 ;//srand和rand配合產生隨機數
        computer = guess_arr[i];//將隨機數轉換為石頭剪刀或者布的字符串
        computer_person[0] = computer;//將計算機的出拳結果放入*computer_person
        do{
            printf("請輸入 剪刀 石頭 布:/n");
            scanf("%s",person);
            if (strcmp(person,"god") == 0)//上帝模式，實現可看到電腦出拳結果
            {
                printf("*********************************/n");
                printf("上帝你好，電腦本局的出的是 : %s /n",computer);
                printf("*********************************/n");
                continue;
            }
            else
                printf("你輸入的是:%s/n", person);//下一行用于判斷用戶的輸入是否為石頭剪刀布
                if ((strcmp(person,"石頭") == 0 )||(strcmp(person,"剪刀") == 0 )||(strcmp(person,"布") == 0 ))
                    break;//結果為石頭剪刀布之一，跳出循環。
                else
                    printf("請檢查你的輸入是否為石頭剪刀或者布： /n");
        }while(1);
        computer_person[1] = person;
        tcnt++;       
        if (strcmp(computer, person) == 0 )
        {
            printf("平手！/n/n");
        }
        else if (exist_in(win, computer_person, length))
        {
              printf("電腦獲勝/n/n");
              dcnt++;
        }
        else
        {
            printf("玩家獲勝/n/n");
            vcnt++;
            nextround();
        }  
    }
    person = NULL;
    computer = NULL;   
    free(person);
    free(computer);
    return 0;
}
/**********************************************
 exist_in函數用于判斷是否是電腦獲勝，length為3，比較3次，arr1和arr2中字符串的
 順序即可判斷出電腦是否獲勝。
 *********************************************/
int exist_in(char *arr1[][2], char *arr2[], int length)
{
    int i;
    for (i = 0; i < length; i++)
    {
        if (strcmp(arr1[i][0], arr2[0]) == 0 && strcmp(arr1[i][1], arr2[1]) == 0)
        {
            return 1;
        }
    }
    return 0;
 }
void nextround (void)
{
    int m = 0;
    printf("請輸入指令：1退出，2繼續，3數據總結/n");
    scanf ("%d",&m);
    switch (m)
    {
    case 1:
        status = QUIT;
        break;
    case 2:
        printf("新的一局開始/n");
        break;
    case 3:
        printf("您的勝場數是%d，敗場數是%d，總場數是%d/n",vcnt,dcnt,tcnt);
        status = QUIT;
        break;
    default:
        printf("輸入錯誤退出");
        status = QUIT;
        break;
    }
}