c++ - 这个char数组代码有什么问题？

Question

我是 C++ 的新手，才编程几天，所以这可能看起来很愚蠢，但你能找出我的数组无法正常工作的原因吗？这是我正在设计的解决数独谜题的程序的开始，但我用来解决它的二维数组无法正常工作。

#include <iostream>
#include <string>
using namespace std;

int main () {
    char dash[9][9];
    for (int array=0; array<9; array++) {
        for (int array2=0; array2<9; array2++) {
            dash[array][array2]=array2;
            cout << dash[array][array2];
        }
    }
    cout << dash[1][4] << endl; //This is temporary, but for some reason nothing outputs when I do this command.
    cout << "╔═══════════╦═══════════╦═══════════╗" << endl;
    for (int count=0; count<3; count++) {
        for (int count2=0; count2<3; count2++) {
            cout << "║_" << dash[count][count2*3] << "_|_" << dash[count]    [count2*3+1] << "_|_" << dash[count][count2*3+2] << "_";   
        }
            cout << "║" << endl;
    }
    cout << "╠═══════════╬═══════════╬═══════════╣" << endl;
    for (int count=0; count<3; count++) {
        for (int count2=0; count2<3; count2++) {
            cout << "║_" << dash[count][count2*3] << "_|_" << dash[count]    [count2*3+1] << "_|_" << dash[count][count2*3+2] << "_";   
        }
        cout << "║" << endl;
    }
cout << "╠═══════════╬═══════════╬═══════════╣" << endl;
for (int count=0; count<3; count++) {
    for (int count2=0; count2<3; count2++) {
        cout << "║_" << dash[count][count2*3] << "_|_" << dash[count][count2*3+1] << "_|_" << dash[count][count2*3+2] << "_";   
    }
    cout << "║" << endl;
}
cout << "╚═══════════╩═══════════╩═══════════╝" << endl;
return 0;

我还知道可能有更简单的方法来构建数独板，但我已经在脑海中看到了这个板的工作原理，如果它失败了，唯一的学习方法就是失败。我只想知道数组出了什么问题。

Answer 1

您已经将数字数据存储在 char 数组中，这很好，但是 cout 试图将其打印为字符。尝试在输出期间转换为整数:

cout << (int)dash[count][count2*3]

另一种选择是将字符存储在数组中:

for (int array=0; array<9; array++) {
    for (int array2=0; array2<9; array2++) {
        dash[array][array2] = '0' + array2;
    }
}