c语言 三子棋/井字棋 算法源代码并讲解

用了这好几天的时间在闲暇时间写了一个小时候玩的井字棋，或者叫三子棋的小游戏，来娱乐娱乐，虽然是黑白框，并且电脑有点傻之外，一切良好。

         首先写之前就要先明白思路，这个棋盘要放到一个二维数组里面这样才能更好的显示出来，并且方便操作，先打印出来棋盘这是必须的，这就是基本的二维数组的打印就好，把棋盘初始化为空格就好了，然后等到走的时候，拿相应的字符来代替就好了；电脑走的话就用随机数来差生坐标就好了，所以才说它傻；

先上代码：

头文件 szq.h

<pre name="code" class="cpp">#define _CRT_SECURE_NO_WARNINGS 1#ifndef __SZQ_GAME_H__#define __SZQ_GAME_H__#define ROWS 3#define COLS 3void init_board(char board[ROWS][COLS], int rows, int cols);void print_board(char board[ROWS][COLS], int rows, int cols);void play_game(char board[ROWS][COLS]);char check_win(char board[ROWS][COLS]);void player_move(char board[ROWS][COLS]);void com_move(char board[ROWS][COLS]);#endif 

#define _CRT_SECURE_NO_WARNINGS 1#include "szq.h"#include <stdio.h>#include <time.h>#include <stdlib.h>void menu(){printf("*************************\n");printf("*****    1.play    ******\n");printf("*****    0.exit    ******\n");printf("*************************\n");}void game(){int input = 1;char board[ROWS][COLS] = { 0 };init_board(board, ROWS, COLS);while (input){menu();printf("请选择:");scanf("%d", &input);if (input == 1){init_board(board, ROWS, COLS);print_board(board, ROWS, COLS);play_game(board);}}}int main(){game();return 0;}

#define _CRT_SECURE_NO_WARNINGS 1#include "szq.h"#include <stdio.h>#include <stdlib.h>void com_move(char board[ROWS][COLS]){int x = 0;int y = 0;srand((unsigned)time(NULL));while (1){x = rand() % 3;y = rand() % 3;if (board[x][y] == ' '){board[x][y] = 'O';return;}}}void player_move(char board[ROWS][COLS]){int x = 0;int y = 0;while (1){printf("请输入坐标：");scanf("%d%d", &x, &y);if (board[x-1][y-1] == ' '){board[x-1][y-1] = 'X';return;}else{printf("输入错误");}}}char check_win(char board[ROWS][COLS]){int i = 0;for (i = 0; i < 3; i++){if ((board[i][0] == board[i][1]) && (board[i][1] == board[i][2]) && (board[i][1] != ' ')){return 'p';}}for (i = 0; i < 3; i++){if ((board[0][i] == board[1][i]) && (board[1][i] == board[2][i]) && (board[1][i] != ' ')){return 'p';}}if ((board[0][0] == board[1][1]) && (board[1][1] == board[2][2]) && (board[1][1] != ' ')){return 'p';}if ((board[0][2] == board[1][1]) && (board[1][1] == board[2][0]) && (board[1][1] != ' ')){return 'p';}}void init_board(char board[ROWS][COLS], int rows, int cols){int i = 0;int j = 0;for (i = 0; i < rows; i++){for (j = 0; j < cols; j++){board[i][j] = ' ';}}}void print_board(char board[ROWS][COLS], int rows, int cols){int i = 0;for (i = 0; i < ROWS; i++){printf(" %c | %c | %c \n", board[i][0], board[i][1], board[i][2]);printf("---|---|---\n");}}void play_game(char board[ROWS][COLS]){char ret;int count = 0;while (1){if (count >= 9){printf("平局！！！！\n");break;}player_move(board);count++;print_board(board, ROWS, COLS);if ((ret = check_win(board)) == 'p'){printf("你获胜了！！！！！\n");break;}if (count >=  9){printf("平局！！！！\n");break;}count++;printf("电脑走：\n");com_move(board);print_board(board, ROWS, COLS);if ((ret = check_win(board)) == 'p'){printf("呵呵！！！\n");break;}}}

这样就结束了，其实原理不复杂，很好相通就是细节还是要注意，细心一点就好。