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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <time.h>
  4.  
  5. // prototype
  6. void print_board();
  7. int judge();
  8. void mark_board();
  9. void print_message(int result);
  10. int calc(int from, int step);
  11.  
  12. // global
  13. int board[3][3] = {};
  14. int turn = 1; /*1=maru,-1=batsu*/
  15. int result;
  16. int mode;
  17.  
  18. int main()
  19. {
  20.   srand(time(NULL));
  21.   printf("0:debug, 1:manual\n");
  22.   scanf("%d", &mode);
  23.  
  24.   print_board();
  25.   while (1) {
  26.     mark_board();
  27.     print_board();
  28.     if ((result = judge())) break;
  29.     turn *= -1;
  30.   }
  31.   print_message(result);
  32.  
  33.   return 0;
  34. }
  35.  
  36. void print_board()
  37. {
  38.   /*引数で受け取った盤のデータ(board)を縦線(|)や○や×を使い画面に表示する*/
  39.   int i, j;
  40.   char s[] = {"X O"};
  41.   for ( i = 0; i < 3; ++i) {
  42.     for ( j = 0; j < 3; ++j) {
  43.       printf("|%c", s[board[i][j] + 1]);
  44.     }
  45.     puts("|");
  46.   }
  47.   puts("");
  48. }
  49.  
  50. int judge()
  51. {
  52.   int r, i, *p = *board;
  53.   /*引数boardの内容をチェックし、○が勝ちなら1を、×が勝ちなら2を、
  54.   　　　引き分けなら3を、まだ勝敗が決まっていないときは0を返す*/
  55.   // printf("i am judge\n");
  56.   while (1) {
  57.     if ((r = calc(0, 3))) break;
  58.     if ((r = calc(1, 3))) break;
  59.     if ((r = calc(2, 3))) break;
  60.     if ((r = calc(0, 1))) break;
  61.     if ((r = calc(3, 1))) break;
  62.     if ((r = calc(6, 1))) break;
  63.     if ((r = calc(0, 4))) break;
  64.     if ((r = calc(2, 2))) break;
  65.  
  66.     r = 0;
  67.     for ( i = 0; i < 9; ++i)
  68.       r += (*p++ == 0);
  69.  
  70.     return r ? 0 : 3;
  71.   }
  72.   return r == 1 ? 1 : 2;
  73. }
  74.  
  75. void mark_board()
  76. {
  77.   /*盤の縦横の位置の入力を促すメッセージを表示し、キーボードから数値を読み込み,
  78.   　　　board配列へturnの値を代入する*/
  79.   int i, j;
  80.   do {
  81.     if (mode == 0) {
  82.       i = rand() % 3;
  83.       j = rand() % 3;
  84.     } else {
  85.       printf("i j = ");
  86.       scanf("%d %d", &i, &j);
  87.     }
  88.   } while (i < 0 | i >= 3 | j < 0 | j >= 3 | board[i][j]);
  89.   board[i][j] = turn;
  90. }
  91.  
  92. void print_message(int result)
  93. {
  94.   char *s[] = {"", "Oの勝ち", "Xの勝ち", "引き分け"};
  95.   /*resultの値に従って勝敗のメッセージを表示する*/
  96.   printf("%s\n", s[result]);
  97.  
  98. }
  99.  
  100. int calc(int from, int step)
  101. {
  102.   int *p = (*board) + from, r = 0, i;
  103.   for ( i = 0; i < 3; ++i) {
  104.     r += *p;
  105.     p += step;
  106.   }
  107.   // printf("r = %d %d\n", r, r / 3);
  108.   return r / 3;
  109. }
  110.  
Success #stdin #stdout 0.02s 1680KB
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stdin
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Standard input is empty
stdout
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0:debug, 1:manual
| | | |
| | | |
| | | |

|O| | |
| | | |
| | | |

|O| | |
| | |X|
| | | |

|O| | |
| | |X|
|O| | |

|O| | |
| |X|X|
|O| | |

|O| | |
|O|X|X|
|O| | |

Oの勝ち
https://ideone.com/JRObzy
language:
C (gcc 8.3)
created:
11 years ago
visibility:
secret

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