这个小游戏是在2020年5月份无聊写的，代码量不大，权当娱乐哈

基本思路：

1.创建一个15*15棋盘类，并设计相关函数（输出棋盘，下黑棋，下白棋等）
2.编写judge()函数，判断胜负条件
3.主函数思路：黑方先下，每次不断更新棋盘的元素：如果该处已经有棋子了，则重新下一次，以此不断循环直到游戏结束。

代码如下：

1.头文件

//wuziqi.h
#ifndef _WUZIQI_H_
#define _WUZIQI_H_
#include <iostream>
using namespace std;

class chessboard;
class chessboard
{ 
public:
	int judge();
	void build();//建立棋盘
	void changeblack(int goalx, int goaly, int& goal);//改变棋盘数组元素即更新棋子
	void changewhite(int goalx, int goaly, int& goal);
	void out();//输出棋盘
private:
	string arr[15][15];
};

#endif // !_WUZIQI_H_

2.cpp文件

//wuziqi.cpp
#include <iostream>
#include "wuziqi.h"

using namespace std;

int chessboard::judge()
{ 
	for (int i = 0; i < 11; i++)
	{ 
		for (int j = 0; j < 11; j++)
		{ 
			if (//横一样
				arr[i][j] == "●" &&
				arr[i][j + 1] == "●" &&
				arr[i][j + 2] == "●" &&
				arr[i][j + 3] == "●" &&
				arr[i][j + 4] == "●"

				) return 0;//不能使用连等
		}
		for (int j = 0; j < 11; j++)
		{ 
			if (//竖一样
				arr[j][i] == "●" &&
				arr[j + 1][i] == "●" &&
				arr[j + 2][i] == "●" &&
				arr[j + 3][i] == "●" &&
				arr[j + 4][i] == "●"

				) return 0;
		}
		for (int j = 0; j < 11; j++)
		{ 
			if (//顺斜一样
				arr[i][j] == "●" &&
				arr[i + 1][j + 1] == "●" &&
				arr[i + 2][j + 2] == "●" &&
				arr[i + 3][j + 3] == "●" &&
				arr[i + 4][j + 4] == "●"

				) return 0;
		}
		for (int j = 14; j > 3; j--)
		{ 
			if (//逆斜一样
				arr[i][j] == "●" &&
				arr[i + 1][j - 1] == "●" &&
				arr[i + 2][j - 2] == "●" &&
				arr[i + 3][j - 3] == "●" &&
				arr[i + 4][j - 4] == "●"

				) return 0;
		}
		for (int j = 0; j < 11; j++)
		{ 
			if (//横一样
				arr[i][j] == "○" &&
				arr[i][j + 1] == "○" &&
				arr[i][j + 2] == "○" &&
				arr[i][j + 3] == "○" &&
				arr[i][j + 4] == "○"

				) return 0;//不能使用连等
		}
		for (int j = 0; j < 11; j++)
		{ 
			if (//竖一样
				arr[j][i] == "○" &&
				arr[j + 1][i] == "○" &&
				arr[j + 2][i] == "○" &&
				arr[j + 3][i] == "○" &&
				arr[j + 4][i] == "○"

				) return 0;
		}
		for (int j = 0; j < 11; j++)
		{ 
			if (//顺斜一样//列从0开始
				arr[i][j] == "○" &&
				arr[i + 1][j + 1] == "○" &&
				arr[i + 2][j + 2] == "○" &&
				arr[i + 3][j + 3] == "○" &&
				arr[i + 4][j + 4] == "○"

				) return 0;
		}
		for (int j = 14; j > 3; j--)
		{ 
			if (//逆斜一样//列从14开始
				arr[i][j] == "○" &&
				arr[i + 1][j - 1] == "○" &&
				arr[i + 2][j - 2] == "○" &&
				arr[i + 3][j - 3] == "○" &&
				arr[i + 4][j - 4] == "○"

				) return 0;
		}
	}
	return 1;
}

//棋盘--------------------------------------------------------------------------------------

void chessboard::build()
{ 
	for (int i = 0; i < 15; i++)
	{ 
		for (int j = 0; j < 15; j++)
		{ 
			arr[i][j] = " ";
		}
	}//初始化棋盘
}
void chessboard::changeblack(int goalx, int goaly, int& goal)//更新点位
{ 
	if (arr[goalx][goaly] != " ")
	{ 
		cout << "这一点已经有子了,请重新下一次黑棋" << endl;
		goal--;
	}
	else
		arr[goalx][goaly] = "○";
}
void chessboard::changewhite(int goalx, int goaly, int& goal)//更新点位
{ 
	if (arr[goalx][goaly] != " ")
	{ 
		cout << "这一点已经有子了,请重新下一次白旗" << endl;
		goal--;
	}
	else
		arr[goalx][goaly] = "●";
}
void chessboard::out()
{ 
	cout << " 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 " << endl;
	for (int i = 0; i < 15; i++)
	{ 
		cout << "---------------------------------------------------------------" << endl;
		if (i < 10)
			cout << i << " | ";
		else
			cout << i << "| ";
		for (int j = 0; j < 15; j++)
		{ 
			cout << arr[i][j] << "| ";
		}
		cout << endl;
	}//输出棋盘，每次输入一个点就输出一次棋盘
	cout << "---------------------------------------------------------------" << endl;
}

//main.cpp
#include <iostream>
#include "wuziqi.h"

using namespace std;

int main(void)
{ 
	chessboard goalboard;//目标棋盘
	goalboard.build();

	goalboard.out();

	for (int i = 1; i < 10000; i++)
	{ 
		if (i % 2 != 0)//奇数黑方走，偶数白方走
		{ 
			int x = 0, y = 0;
			cout << "请输入黑棋x坐标和y坐标" << endl;
			cin >> y >> x;
			goalboard.changeblack(x, y, i);//持续更新黑棋盘
			goalboard.out();

			if (goalboard.judge() == 0)
			{ 
				cout << "游戏结束 黑棋胜利！" << endl;
				cout << "输入任意坐标重新开始" << endl;
				goalboard.build();
			}
		}
		else
		{ 
			int x = 0, y = 0;
			cout << "请输入白棋x坐标和y坐标" << endl;
			cin >> y >> x;
			goalboard.changewhite(x, y, i);//持续更新白棋盘
			goalboard.out();

			if (goalboard.judge() == 0)
			{ 
				cout << "游戏结束 白旗胜利！" << endl;
				cout << "输入任意坐标重新开始" << endl;
				goalboard.build();
			}
		}
	}

	return 0;
}

运行效果图：

PS：

这个小游戏还有不少不足之处，如输入棋子坐标超过棋盘大小怎么办？胜负的判定是否还有更简单的方法？都值得再去思考完善。
菜鸡一枚难免有很多不足之处，欢迎指教！感激不尽！