Dynamically Allocated Arrays

Dynamic-Arrays.cpp

//1D array
void allocateOneD(int*& p, int size)
{
	p = new int* [size];
}

void deallocateOneD(int* p, int size)
{
	delete[] p;
}


//2D array
void allocateTwoD(int**& p, int nrows, int ncols)
{

	p = new int* [nrows];

	for (int i = 0; i < nrows; i++)
	{
		p[i] = new int[ncols];
	}

}

void deallocateTwoD(int** p, int nrows, int ncols)
{
	for (int i = 0; i < nrows; i++)
	{
		delete[] p[i];
	}
	delete[] p;
}


//3Darray
void allocateThreeD(int***& p, int npages, int rows, int cols)
{
	p = new int** [npages];

	for (int i = 0; i < npages; i++)
	{
		p[i] = new int* [rows];
		for (int j = 0; j < rows; j++)
		{
			p[i][j] = new int[cols];
		}
	}
}

void deAllocateThreeD(int*** p, int npages, int rows, int cols)
{
	for (int i = 0; i < npages; i++)
	{
		for (int j = 0; j < rows; j++)
		{
			delete[] p[i][j];
		}
		delete[] p[i];
	}
	delete[] p;
}