五子棋小程序

这是我大一做的一个课程设计
目前阶段只有人人对战
之后还想做人机对战，并且使机器只能一点
现阶段略微有些弱智
勿喷勿喷

#include 
#define SIZE 15
#define WIN 5

using namespace std;

char chessboard[SIZE][SIZE];
int heng,zong;

void prch();//打印棋盘
int menu();//游戏选择界面
int judge(char a);//判断黑子白子是否胜利

int main()
{
    /*if(menu()==2)
        goto end;*/
    menu();
    prch();

    int flag=0;
    for (int i=0; i<SIZE; i++)//对奇葩内容进行初始化
        for (int j=0; j<SIZE; j++)
            chessboard[i][j] = ' ';
    printf("请输入黑子(@)的坐标，形如：4 4： ");
    while(~scanf("%d%d",&zong,&heng))
    {
        while (heng<1||zong<1||heng>SIZE||zong>SIZE||chessboard[zong-1][heng-1] != ' ')
        {
            printf("输入有误！请重新输入！\n\n");
            if (flag%2==0)
                printf("请输入黑子(@)坐标，形如：4 4:");
            else
                printf("请输入白子(O)坐标，形如：4 4:");
            scanf("%d%d",&zong,&heng);
        }
        if (flag%2==0)
            chessboard[zong - 1][heng - 1]='@';
        else
            chessboard[zong - 1][heng - 1]='O';
        prch();
        //判断哪一方获胜
        if(flag%2==0)
        {
            if(judge('@'))
            {
                printf("黑棋获胜！！！！\n");
                break;
            }
        }
        else
        {
            if(judge('O'))
            {
                printf("白棋获胜！！！！\n");
                break;
            }
        }
        flag++;
        if (flag%2 ==0)
            printf("请输入黑子(@)坐标，形如：4 4:");
        else
            printf("请输入白子(O)坐标，形如：4 4:");
    }
    /*end:
        printf("退出游戏");*/
    return 0;
}

void prch()//打印棋盘
{
    printf("    ");
    for (int i=1; i<=SIZE; i++)
        printf(" %-3d",i);
    printf("\n");
    printf("    ___________________________________________________________\n");
    for (int i=0; i<SIZE; i++)
    {
        if (i>=0)
            printf("%-3d",i+1);
        else
            printf("   ");
        printf("|");
        for (int j=0; j<SIZE; j++)
            printf(" %-2c|", chessboard[i][j]);
        printf("\n    ___________________________________________________________\n");
    }
    printf("\n\n");
}

int menu()//游戏选择界面
{
    int num;
    printf("************ 五子棋小游戏  ************\n");
    printf("******  1.进入游戏  2.退出游戏  ******\n");
    printf("**************************************\n");
    printf("         您的选择（1或2）是：");
    scanf("%d",&num);
    return num;
}

int judge(char a)//判断黑子白子是否胜利
{
    for (int i=0;i<SIZE;i++)
    {
        for (int j=0;j<SIZE;j++)
        {
            if (chessboard[i][j] == a)
            {
                int count_a = 1;

                //竖直方向
                for (int x=i-1,times=0;x>=0;x--,times++)
                {
                    if (chessboard[x][j]==a)
                    {
                        count_a++;
                    }
                    else
                        break;
                    if (times>WIN-1)
                        break;
                }
                for (int y=i+1,times=0;y<SIZE;y++,times++)
                {
                    if (chessboard[y][j]==a)
                    {
                        count_a++;
                    }
                    else
                        break;
                    if (times>WIN-1)
                        break;
                }
                if (count_a>=WIN)
                {
                    return true;
                }

                //横方向
                count_a=1;
                for (int x=j-1,times=0;x>=0;x--,times++)
                {
                    if (chessboard[i][x]==a)
                    {
                        count_a++;
                    }
                    else
                        break;
                    if (times>WIN-1)
                        break;
                }
                for (int y=j+1,times=0;y<SIZE;y++,times++)
                {
                    if (chessboard[i][y]==a)
                    {
                        count_a++;
                    }
                    else
                        break;
                    if (times>WIN-1)
                        break;
                }
                if (count_a>=WIN)
                {
                    return true;
                }

                //上斜下方向
                count_a=1;
                for (int x=i-1,y=j-1,times=0;i>=0&&j>=0;x--,y--,times++)
                {
                    if (chessboard[x][y]==a)
                    {
                        count_a++;
                    }
                    else
                        break;
                    if (times>WIN-1)
                        break;
                }
                for (int x=i+1,y=j+1,times=0;i<SIZE&&j<SIZE;x++,y++,times++)
                {
                    if (chessboard[x][y]==a)
                    {
                        count_a++;
                    }
                    else
                        break;
                    if (times>WIN-1)
                        break;
                }
                if (count_a>=WIN)
                {
                    return true;
                }

                //下斜上方向
                count_a=1;
                for (int x=i+1,y=j-1,times=0;x<SIZE&&y>=0;x++,y--,times++)
                {
                    if (chessboard[x][y]==a)
                    {
                        count_a++;
                    }
                    else
                        break;
                    if (times>WIN-1)
                        break;
                }
                for (int x=i-1,y=j+1,times=0;x>=0&&y<SIZE;x--,y++,times++)
                {
                    if (chessboard[x][y]==a)
                    {
                        count_a++;
                    }
                    else
                        break;
                    if (times>WIN-1)
                        break;
                }
                if (count_a>=WIN)
                {
                    return true;
                }

            }
        }
    }
    return false;
}