mano M wrote:
> Can we allocate 2D array (dynamically) in one line.
>
> int **p;
>
> int i,j;
> std::cin>>i>>j;
>
> p=new int[i][j];
>
> ----------------
> ------------------
> ----------------
>
> delete [][]p;
>
>
> Is the above code snippet acceptable?
> Thanks,
> Manoj
You know you can always try stuff out and see what happens instead of
waiting for a response from a mailing list.
But, no, you can't do it that way. However, you CAN do two allocations
and then split up the memory into smaller chunks (by row):
int **p, *p2, *p3;
size_t i, j, k;
std::cin >> i >> j;
p3 = p2 = new int[i * j];
p = new int *[i];
for (k = 0; k < i; k++)
{
p[k] = p3;
p3 += j;
}
...do stuff with 2D array as usual...
delete [] p;
delete [] p2;
However, you shouldn't have new/delete at the application layer. The
above is just an example. Use a library layer template in production code.
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