三子棋（C语言版）

1:>函数定义

game.h

#define _CRT_SECURE_NO_WARNINGS 1

#define ROW 3
#define COL 3

#include <stdio.h>
#include<stdlib.h>
#include<time.h>

//头文件中声明函数
// 
//初始化棋盘
void init_board(char board[ROW][COL], int row, int col);

//打印棋盘
void print_board(char board[ROW][COL], int row, int col);

//玩家下棋
void player_move(char board[ROW][COL], int row, int col);

//电脑下棋
void computer_move(char board[ROW][COL], int row, int col);

//判断输赢的函数
char is_win(char board[ROW][COL], int row, int col);

2:>游戏测试

test.c

#define _CRT_SECURE_NO_WARNINGS 1

#include "game.h"
void menu( )
{
  printf("**********************\n");
  printf("*****  1.play  *******\n");
  printf("*****  0.eixt  *******\n");
  printf("**********************\n");
}
void game()
{
  char board[ROW][COL];
  char ret = 0;
  //初始化一下棋盘全空格
  init_board(board,ROW ,COL);
  print_board(board, ROW, COL);

  while (1)
  {
    player_move(board, ROW, COL);
    print_board(board, ROW, COL);
    //判断输赢
    ret = is_win(board, ROW, COL);
    if (ret != 'C')
    {
      break;
    }
    computer_move(board, ROW, COL);
    print_board(board, ROW, COL);
    //判断输赢
    ret = is_win(board, ROW, COL);
    if (ret != 'C')
    {
      break;
    }
  }
  if (ret == '#')
    printf("电脑赢了\n");
  else if (ret == '*')
    printf("玩家赢了\n");
  else if (ret == 'Q')
    printf("平局\n");

}

//判断输赢
//判断输赢的代码要告诉我: 电脑赢了？玩家赢了？平局？游戏继续？
//电脑赢了:#
//玩家赢了:*
//平局:Q
//游戏继续:C
void test()
{
  srand((unsigned int)time(NULL));
  int input = 0;
  do
  {
    menu();
    printf("请选择:>");
    scanf("%d", &input);
    switch (input)
    {
    case 1:
      game();
      break;
    case 0:
      printf("退出游戏\n");
      break;
    default:
      printf("选择错误\n");
      break;
    }
  } while (input);
}
int main()
{
  test( );
  return 0;
}

3:>游戏实现

game.c

#define _CRT_SECURE_NO_WARNINGS 1

#include "game.h"

void init_board(char board[ROW][COL], int row, int col)
{
  int i = 0;
  for (i = 0; i < row; i++)
  {
    int j = 0;
    for (j = 0; j < col; j++)
    {
      board[i][j] = ' ';
    }
  }
}


//void print_board(char board[ROW][COL], int row, int col)
//{
//  int i = 0;
//  for (i = 0; i < row; i++)
//  {
//    printf(" %c | %c | %c \n", board[i][0], board[i][1], board[i][2]);
//    if(i<row-1)
//      printf("---|---|---\n");
//    
//  }
//}

void print_board(char board[ROW][COL], int row, int col)
{
  int i = 0;
  for (i = 0; i < row; i++)
  {
    /*printf(" %c | %c | %c \n", board[i][0], board[i][1], board[i][2]);*/
    int j = 0;
    for (j = 0; j < col; j++)
    {
      printf(" %c ", board[i][j]);
      if(j<col-1)
        printf("|");
    }
    printf("\n");
    if (i < row - 1)
    {
      //printf("---|---|---\n");
      for (j = 0; j < col; j++)
      {
        printf("---");
        if(j<col-1)
          printf("|");
      }
      printf("\n");
    }
  }
}

void player_move(char board[ROW][COL], int row, int col)
{
  printf("玩家下棋\n");
  while (1)
  {
    printf("请输入要下棋的坐标:>");
    int x = 0;
    int y = 0;
    scanf("%d %d", &x, &y);
    if (x >= 1 && x <= row && y >= 1 && y <= col)
    {
      if (board[x - 1][y - 1] == ' ')
      {
        board[x - 1][y - 1] = '*';
        break;
      }
      else
      {
        printf("该坐标被占用，请重新输入\n");
      }
    }
    else
    {
      printf("坐标非法\n");
    }
  }
}


//电脑下棋
//随机生成坐标，只要坐标没有被占用，就下棋
void computer_move(char board[ROW][COL], int row, int col)
{
  printf("电脑下棋:\n");
  while (1)
  {
    int x = rand() % row;
    int y = rand() % col;
    if (board[x][y] == ' ')
    {
      board[x][y] = '#';
      break;
    }
  }
}


//我希望is_full这个函数只是为了支持is_win函数的，只是在is_win函数内部使用
// 那我们没不要在头文件中声明
// 
//判断棋盘是否满了
static int is_full(char board[ROW][COL], int row, int col)
{
  int i = 0;
  int j = 0;
  for (i = 0; i < row; i++)
  {
    for (j = 0; j < col; j++)
    {
      if (board[i][j] == ' ')
        return 0;
    }
  }
  return 1;
}

char is_win(char board[ROW][COL], int row, int col)
{
  int i = 0;
  //判断三行
  for (i = 0; i < row; i++)
  {
    if (board[i][0] == board[i][1] && board[i][1] == board[i][2] && board[i][0] != ' ')
    {
      return board[i][0];
    }
  }
  //判断三列
  for (i = 0; i < col; i++)
  {
    if (board[0][i] == board[1][i] && board[1][i] == board[2][i] && board[0][i] != ' ')
    {
      return board[0][i];
    }
  }
  //对角线
  if (board[0][0] == board[1][1] && board[1][1] == board[2][2] && board[1][1] != ' ')
  {
    return board[1][1];
  }
  if (board[0][2] == board[1][1] && board[1][1] == board[2][0] && board[1][1] != ' ')
  {
    return board[1][1];
  }

  //平局？
  if (is_full(board, row, col) == 1)
  {
    return 'Q';
  }

  //继续
  //没有玩家或者电脑赢，也没有平局，游戏继续
  return 'C';
}