C語言實現小游戲（二）——剪刀石頭布

#include<stdio.h>
void  menu()
{
 printf("*************歡迎進入石頭剪刀布游戲************\n");
 printf("*******************1.start>********************\n");
 printf("*******************0.exit >********************\n");
 printf("***********************************************\n");
}
int main()
{
 int input = 1;
 char ch[10];
 int n = 0;
 int b = 0;
 int i = 0;
 int j = 0;
 int k = 0;
 int a = 0;
 while (input)
 {
  menu();
  printf("請選擇>");
  scanf("%d", &input);
  switch (input)
  {
  case 1:
  {for (i = 0; i < 3; i++)
  {
   srand((unsigned int)time(NULL));
   n = rand() % 3;
   printf("請出石頭-剪刀-布\n");
   scanf("%s", ch);
   if (strcmp(ch, "石頭") == 0)
    b = 0;
   else if (strcmp(ch, "剪刀") == 0)
    b = 1;
    else if (strcmp(ch, "布") == 0)
    b = 2;
   if (b == n)
   {
    printf("平局\n");
    k++;
   }
   else  if ((b == 0) && (n == 1))
   {
    printf("恭喜你贏了\n");
    j++;
   }
   else if ((b == 0) && (n == 2))
   {
    printf("很遺憾你輸了\n");
    a++;
   }
   else if ((b == 1) && (n == 0))
   {
    printf("很遺憾你輸了\n");
    a++;
   }
   else if ((b == 1) && (n == 2))
   {
    printf("恭喜你贏了\n");
    j++;
   }
   else if((b == 2) && (n == 0))
   {
    printf("恭喜你贏了\n");
    j++;
   }
   else
   {
    printf("很遺憾你輸了\n");
    a++;
   }
   if (j == 2)
   {
    break;
   }
   if (a == 2)
   {
    break;
   }
  }
  }
   if (j == 2)
   {
    printf("恭喜你這一局贏了\n");
    break;
   }
   else if (a == 2)
   {
    printf("很遺憾這一局你輸了\n");
    break;
   }
   else if (k == 3)
   {
   
    printf("這局是平局\n");
    break;
   }
   else if ((k==2)&&(a==1))
   {
    printf("很遺憾這一局你輸了\n");
    break;
   }
   else if ((k == 2) && (j == 1))
   {
    printf("恭喜你這一局贏了\n");
    break;
   }
  default:
  {
       printf("退出游戲\n");
            system("pause");
      exit(0);
       break;
  }
 }
 }
 system("pause");
 return 0;
}