C之五子棋，五子棋

C之五子棋，五子棋

  1 #include <stdio.h>
  2 #include <stdlib.h>
  3 
  4 #define N    15
  5 
  6 int chessboard[N + 1][N + 1] = { 0 };
  7 
  8 int whoseTurn = 0;
  9 
 10 void initGame(void);
 11 void printChessboard(void);
 12 void playChess(void);
 13 int judge(int, int);
 14 
 15 int main(void)
 16 {
 17     initGame();
 18 
 19     while (1)
 20     {
 21         whoseTurn++;
 22 
 23         playChess();
 24     }
 25 
 26     return 0;
 27 }
 28 
 29 void initGame(void)
 30 {
 31     char c;
 32 
 33     printf("Please input \'y\' to enter the game:");
 34     c = getchar();
 35     if ('y' != c && 'Y' != c)
 36         exit(0);
 37 
 38     system("cls");
 39     printChessboard();
 40 }
 41 
 42 void printChessboard(void)
 43 {
 44     int i, j;
 45 
 46     for (i = 0; i <= N; i++)
 47     {
 48         for (j = 0; j <= N; j++)
 49         {
 50             if (0 == i)
 51                 printf("%3d", j);
 52             else if (j == 0)
 53                 printf("%3d", i);
 54             else if (1 == chessboard[i][j])
 55                 printf("  O");
 56             else if (2 == chessboard[i][j])
 57                 printf("  X");
 58             else
 59                 printf("  *");
 60         }
 61         printf("\n");
 62     }
 63 }
 64 
 65 void playChess(void)
 66 {
 67     int i, j, winner;
 68 
 69     if (1 == whoseTurn % 2)
 70     {
 71         printf("Turn to player 1, please input the position:");
 72         scanf("%d %d", &i, &j);
 73 
 74         while (chessboard[i][j] != 0)
 75         {
 76             printf("This position  has been occupied, please input the position again:");
 77             scanf("%d %d", &i, &j);
 78         }
 79 
 80         chessboard[i][j] = 1;
 81     }
 82     else
 83     {
 84         printf("Turn to player 1, please input the position:");
 85         scanf("%d %d", &i, &j);
 86 
 87         while (chessboard[i][j] != 0)
 88         {
 89             printf("This position  has been occupied, please input the position again:");
 90             scanf("%d %d", &i, &j);
 91         }
 92 
 93         chessboard[i][j] = 2;
 94     }
 95 
 96     system("cls");
 97     printChessboard();
 98 
 99     if (judge(i, j))
100     {
101         if (1 == whoseTurn % 2)
102         {
103             printf("Winner is player 1!\n");
104             exit(0);
105         }
106         else
107         {
108             printf("Winner is player 2!\n");
109             exit(0);
110         }
111     }
112 }
113 
114 int judge(int x, int y)
115 {
116     int i, j;
117     int t = 2 - whoseTurn % 2;
118 
119     for (i = x - 4, j = y; i <= x; i++)
120     {
121         if (i >= 1 && i <= N - 4 && t == chessboard[i][j] && t == chessboard[i + 1][j] && t == chessboard[i + 2][j] && t == chessboard[i + 3][j] && t == chessboard[i + 4][j])
122             return 1;
123     }
124     for (i = x, j = y - 4; j <= y; j++)
125     {
126         if (j >= 1 && j <= N - 4 && t == chessboard[i][j] && t == chessboard[i][j + 1] && t == chessboard[i][j + 1] && t == chessboard[i][j + 3] && t == chessboard[i][j + 4])
127             return 1;
128     }
129     for (i = x - 4, j = y - 4; i <= x, j <= y; i++, j++)
130     {
131         if (i >= 1 && i <= N - 4 && j >= 1 && j <= N - 4 && t == chessboard[i][j] && t == chessboard[i + 1][j + 1] && t == chessboard[i + 2][j + 2] && t == chessboard[i + 3][j + 3] && t == chessboard[i + 4][j + 4])
132             return 1;
133     }
134     for (i = x + 4, j = y - 4; i >= 1, j <= y; i--, j++)
135     {
136         if (i >= 1 && i <= N - 4 && j >= 1 && j <= N - 4 && t == chessboard[i][j] && t == chessboard[i - 1][j + 1] && t == chessboard[i - 2][j + 2] && t == chessboard[i - 3][j + 3] && t == chessboard[i - 4][j + 4])
137             return 1;
138     }
139 
140     return 0;
141 }