#include <stdio.h>

int main(void)
{
    int i=0;
    int player=0;
    int winner=0;
    int choice=0;
    int column=0;
    int line=0;
    int row=0;
    char answer=0;
     char  board[3][3]={
        {'1','2','3'},
        {'4','5','6'},
        {'7','8','9'}
        };
    do
    {
     i=0;
     player=0;
     winner=0;
     choice=0;
     column=0;
     line=0;
     row=0;
     answer=0;
      board[3][3]={                       程序说这个地方有错误
        {'1','2','3'},
        {'4','5','6'},
        {'7','8','9'}
        };
   
    for( i=0;i<9&&winner==0;i++)
    {
        printf("\n\n");
        printf(" %c | %c | %c\n",board[0][0],board[0][1],board[0][2]);
        printf("---+---+---\n");
        printf(" %c | %c | %c\n",board[1][0],board[1][1],board[1][2]);
        printf("---+---+---\n");
        printf(" %c | %c | %c\n",board[2][0],board[2][1],board[2][2]);

        player=i%2 + 1;

        do
        {
            printf("\n玩家 %d ,请输入数字来确定%c的位置:",player,(player==1)?'X':'O');
            scanf("%d",&choice);

            row=--choice/3;
            column=choice%3;
        }while(choice<0 || choice>9 ||board[row][column]>'9');

        board[row][column]=(player==1) ? 'X':'O';

        if((board[0][0]==board[1][1]&&board[0][0]==board[2][2])||
            (board[0][2]==board[1][1]&&board[0][2]==board[2][0]))
            winner=player;
        else
            for(line=0;line<=2;line++)
                if((board[line][0]==board[line][1]&&
                    board[line][0]==board[line][2])||
                    (board[0][line]==board[1][line]&&
                    board[0][line]==board[2][line]))
                    winner=player;
    }

        printf("\n\n");
        printf(" %c | %c | %c\n",board[0][0],board[0][1],board[0][2]);
        printf("---+---+---\n");
        printf(" %c | %c | %c\n",board[1][0],board[1][1],board[1][2]);
        printf("---+---+---\n");
        printf(" %c | %c | %c\n",board[2][0],board[2][1],board[2][2]);

        if(winner==0)
            printf("\n这是个平局\n");
        else
            printf("\n玩家 %d ，恭喜你，你获胜了\n",winner);
        
        printf("你想再玩一次吗？(y/n):");
        scanf(" %c",&answer);
}while(answer=='y'||answer=='Y');
    return 0;
}

我明白了，3Q