I have a class and I don't know how to solve an error in the .cc file to compile
exerpt of .h file to show board in .h file
class sudokuboard {
private:
/*** Member data ***/
char board[9][9];
.cc file parts giving me trouble
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]’
I don't know what to change anymore. i've tried so many different approaches.
The problem is that a C-style array doesn't have a get
method. The easiest solution whould be to access the variables with board[r][c]
. But I would suggest using a c++ container.
using Row = std::vector<char>;
using Matrix = std::vector<Row>;
Matrix board;
Or if you want to take it a step further, you can make Matrix a class so you can implement your own get
and set
functions taking an x
and a y
coordinate.
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