How do I declare a 2d array in C++ using new?

Question

How do i declare a 2d array using new? Like, for a "normal" array I would: int* ary = new int[Size] but int** ary = new int[sizeY][sizeX] a) doesn't work/compile and b) doesn't accomplish what: int ary[sizeY][sizeX] does.

Answer 1

using namespace std;

#include <iostream>

int main()

{

int ** ary;

ary = new int*[5];

for (int iLoop=0; iLoop<5; iLoop++)

{

ary[iLoop] = new int[5];

}

for (int iLoop=0; iLoop<5; iLoop++)

{

for (int jLoop=0; jLoop<5; jLoop++)

{

ary[iLoop][jLoop]= (jLoop+1);

cout << ary[iLoop][jLoop] << " ";

}

cout << endl;

}

for (int iLoop=0; iLoop<5; iLoop++)

{

delete(ary[iLoop] );

}

delete(ary);

}