Dynamic Multidimensional Array Allocation in C++

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2 total messages Started by Tommy Kelly Mon, 04 Jan 1993 15:41

Author: Tommy Kelly
Date: Mon, 04 Jan 1993 15:41

11 lines
671 bytes

How do I implement a dynamically configurable two dimensional array in C++?

For one dimension its easy, but doing:

my_type *my_type_var = new my_type[a][b];

doesn't seem to work.

thanks for any help.

tk

Re: Dynamic Multidimensional Array Allocation in C++

Author: Tommy Kelly
Date: Tue, 05 Jan 1993 01:02

18 lines
1070 bytes

In article <C0C68I.MA7@dcs.ed.ac.uk> tk@dcs.ed.ac.uk (Tommy Kelly) writes:
>How do I implement a dynamically configurable two dimensional array in C++?
>
>For one dimension its easy, but doing:
>
>my_type *my_type_var = new my_type[a][b];

What I'm doing at the moment is explicitly creating a vector of vectors like:

	My_type **my_type_var = new My_type*[a];
	for(int i=0; i<b; i++) {
    	  my_type_var[i] = new My_type[b];
	}

I can then access the array my_type_var[a][b] as normal.
But it seems kinda inelegant.  Maybe I expect too much from C++...

tk

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