dynamic memory with pointers and 2d arrays

[zoobernut]

Hi I am having a massive difficulty setting up a 2d array with pointers and dynamic memory. I can create it but I can't access it. If I try then I get a segfault.

    void createArray ( char** &arrayPntr, int lenX, int lenY )
    {
        arrayPntr = new char*[lenY];
        for ( int x = 0; x < lenY; x++ )
        {
            *arrayPntr = new char[lenX];
            arrayPntr++;
        }
    }

This creates an array of pointers and each location then points to a character array. I want to initialize the entire array to contain O so I tried doing this:

     void initializeArray ( char** arrayPtr, int lenX, int lenY )
    {
        for ( int y = 0; y < lenY; y++ )
        {
            for ( int x = 0; x < lenX; x++ )
            {
                **arrayPtr = 'O';
            }
            arrayPtr++;
        }
    }

Any ideas why I am getting a segfault? How do I access the character arrays at the bottom of my 2d array? I am at a loss here.

Thanks for the help.

[zoobernut]

Figured out what I was doing wrong. Forgot to pass the first pointer by reference. Got it all fixed now.

[Takedown3]

fuck i hated pointers in my advanced C++ class back in 2000, glad i don't have to program