Question

我有一个类，我不知道如何解决.cc文件中的错误来编译

.h文件的内容以显示.h文件中的电路板

    class sudokuboard {

 private:

  /*** Member data ***/

  char board[9][9];

.cc文件部分给我带来麻烦

sudokuboard::sudokuboard()
{
  for (size_t r = 0; r < 9; r++){
    for (size_t c = 0; c < 9; c++)
        board[r][c] = '_';
  }
}

void sudokuboard::print() const
// write the board to cout
{
    for (size_t r = 0; r < 9; r++){
        string colStr = "";
        for (size_t c = 0; c < 9; c++){
            colStr += board.get(r, c);
        }
        cout << colStr << endl;
    }

void sudokuboard::remove(size_t r, size_t c)
// remove the numeral at position (r,c)
{
    board[r][c] = "_";
}

ERRORS:
sudokuboard.cc: In member function ‘void sudokuboard::print() const’:      
sudokuboard.cc:26: error: request for member ‘get’ in ‘((const 
sudokuboard*)this)->sudokuboard::board’, which is of non-class type
‘const char [9][9]’
sudokuboard.cc: In member function ‘void sudokuboard::remove(size_t, 
size_t)’:
sudokuboard.cc:42: error: invalid conversion from ‘const char*’ to ‘char’
sudokuboard.cc:59: error: request for member ‘get’ in ‘((const 
sudokuboard*)this)->sudokuboard::board’, which is of non-class type ‘const
char [9][9]’

我不知道该改变什么。我尝试了很多不同的方法。

Answer 1

问题是C风格的数组没有get方法。最简单的解决方案是使用board[r][c]访问变量。但我建议使用c ++容器。

using Row = std::vector<char>;
using Matrix = std::vector<Row>;

Matrix board;

或者，如果您想更进一步，可以将Matrix设为一个类，这样您就可以实现自己的get和set函数，并使用x和{{1坐标。

无效从'const char *'转换为'char'类错误

1 个答案: