c

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
int main(void)
{
   int i,j,k1,k2,k3,k4,r,answer;
srand((unsigned) time(NULL) + getpid());

   for(i=0;i<1;i++)
   {
     r=rand()%9999;
   }
	int a,A,B,chance,counterA,counterB;
	int w = r / 1 % 10;
    int x = r / 10 % 10;
    int y = r / 100 % 10;
    int z = r / 1000 % 10;

	printf("歡迎使用1a2b小遊戲\n");
	printf("\n請輸入猜謎次數上限次數: ",chance);
	scanf("%d",&chance);
	printf("遊戲次數共有%d次 \n",chance);


	for( j =  1; j <= chance ; j++ )
		{

			printf("\n請輸入四位數字: ");
            scanf("%d",&a);
            printf("您輸入的數字是:%04d \n",a);
            printf("剩餘遊戲次數: %d 次\n",chance-j);
            int b = a / 1 % 10;
    		int c = a / 10 % 10;
    		int d = a / 100 % 10;
    		int e = a / 1000 % 10;

    		counterA = counterB = 0;

			if(b==w){counterA++;}
			else if(b==x){counterB++;}
		 	else if(b==y){counterB++;}
			else if(b==z){counterB++;}

			if(c==x){counterA++;}
			else if(c==w){counterB++;}
		 	else if(c==y){counterB++;}
			else if(c==z){counterB++;}


			if(d==y){counterA++;}
			else if(d==w){counterB++;}
		 	else if(d==x){counterB++;}
			else if(d==z){counterB++;}

			if(e==z){counterA++;}
			else if(e==w){counterB++;}
		 	else if(e==x){counterB++;}
			else if(e==y){counterB++;}
			printf("目前的狀況是:%d A %d B \n",counterA,counterB);
					if (counterA == 4	)
						{printf("\n恭喜你答對了!Congratulations!\n");  }

					if(0 >= chance-j)
						{
							printf("\n遊戲結束!你輸了!\n");
							printf("正確答案是:%04d",r);
							}

	}
			    while (answer == 1 || answer == 0 || counterA == 4 )
     				{
     					printf("\n\n是否重新進行遊戲?(輸入1繼續,輸入0結束):",answer);
     					scanf("%d",&answer);
     					if(answer == 1){printf("\n\n"); return main();}
     					else if(answer == 0){printf("\n\n遊戲結束!");break;}
					}


   system("pause");
   return 0;
}