Constructors for creating 2d arrays

[Welshy]

Hey guys, been a while since ive posted on here.......had a break to take some exams, ANYWAY lets get straight to my problem

I'm making a small minesweeper game, and i want the player to be able to select the size of the minefield, but the constructor is turning out to be a bit of a problem. The best i could come up with it below, but ill need to define i and j as ints, but i'd rather not create another two variables, is there a better way? thanks

int m_Height;
int m_Width;
Field(char field[int i][int j]);           // constructor
char m_MineField[][];                      // minefield itself

Field(char field[i][j]): m_MineField[m_Width][m_Height](field[i][j])

[elad]

int m_Height;
int m_Width;
char **m_MineField;  
m_MineField = new char*[m_Height];
for(int i = 0; i < m+Height; ++i)
   m_MineField = new char[m_Width];

look up declaring and using multidimensional arrays using dynamic memory for further details.

[Daved]

Use a two dimensional vector instead. It is easy to size to whatever size the user specifies.

[Welshy]

Oh didnt know you could use a 2d vector, thanks for that Daved.

Before anyone calls me stupid, im learning incase you couldnt guess :P

[hk_mp5kpdw]

You can also use a templated grid structure/class:

template<int height=5,int width=5>
struct grid
{
    int data[height][width];
    grid()
    {
        // Initialize the grid
    }
    int GetWidth() const
    {
        return width;
    }
    int GetHeight() const
    {
        return height;
    }
    // Other member functions...
};

...

grid<> minefield1;       // Creates a default 5x5 minefield
grid<10,20> minefield2;  // Creates a 10x20 minefield

[Welshy]

whoa i havent got onto templates yet, one step at a time, lol, cheers anyway