Multi-dimensional arrays on the heap

[Kularic]

Why does this work:
char * map = new map[x]
but this doesnt:
char map = new map[x][y]
???
Is there a way to create multi-dimensional arrays on the heap??

[Kularic]

4th line should be:
char * map = new map[x][y]

[Kularic]

Exact error:
cannot convert `char (*)[6]' to `char*' in initialization

[Regel]

char** map = new char*[x]; // x rows
for(int i=0; i < x; i++)
 map[i] = new char[y]; // each row points to a different 1d array.

[D_Drmmr]

Originally Posted by Kularic

Is there a way to create multi-dimensional arrays on the heap??

Instead of using arrays, you should be using vector's. They shield you from the maintenance nightmares of manual memory allocation and provide more functionality than dynamic arrays.
You can use a multi-dimensional vector like this:

#include <vector>
int main()
{
    // create a matrix of 4 x 3 filled with 0
    std::vector<std::vector<int> > matrix(4, std::vector<int>(3, 0));
    matrix[0][0] = 1;
}

[Paul McKenzie]

Originally Posted by Kularic

Is there a way to create multi-dimensional arrays on the heap??

Why not do a search on CodeGuru? This question is one of the most asked and answered questions here. There are at least 100 threads on this topic, both with examples in C and C++, plus if you search the C++ FAQs here, you see an example.

Regards,

Paul McKenzie