朋友们好，我输出了一个二维数组，代码如下（是正确的）：
char numbers[5][9]={' ',' ',' ',' ','x',' ',' ',' ',' ',
                        ' ',' ',' ','x','x','x',' ',' ',' ',
                        ' ',' ','x','x','x','x','x',' ',' ',
                        ' ','x','x','x','x','x','x','x',' ',
                        'x','x','x','x','x','x','x','x','x'};
    int i,j;
    for (i=0;i<=4;++i)
    {
        for (j=0;j<=8;++j)
            printf("%c",numbers[i][j]);
        putchar ('\n');
    }

然后我希望通过程序将上述中的每个x替换成o，

for (i=0;i<5;++i)
        for (j=0;j<=8;++j)
            if(unmbers[i][j]=='x') numbers[i][j]='o';

谢谢朋友，已经明白了！非常感谢！