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dynamically allocating multi-dimensional array using new

Posted on 1998-12-13
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Last Modified: 2010-04-02
Hi!

  Here is the beginner's question: How do I dynamically allocate a multi-dimensional array say int test[row][col] using the C++ 'new' operator? I tried the following:

int** test;
test = new (int*)[row];
for(int i=0;i<row;i++)
  test[i] = new int[col];

but it didn't even compile...
I also tried test = new int[row][col], no lucky either...


Can anybody please help? Also, it will be good if you can show me how to free the array using 'delete'. Thanks a lot and sorry for the point :-Ppp (that's all I have)

wyldsj
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Question by:wyldsj
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3 Comments
 

Author Comment

by:wyldsj
ID: 1180122
Edited text of question
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Accepted Solution

by:
trillo earned 0 total points
ID: 1180123
Supose you have A and B as your dimensions:
To use the new operator use something like this:
int **W;
W = new Complex* [A];
for (int i = 1; i < A; l++)
{
    W[i] = new int [B];
}

To use the delete operator use something like this:
for (int i = 1; i < A; l++)
{
    delete []_W[i];
}
delete []_W;


Trillo
0
 

Author Comment

by:wyldsj
ID: 1180124
thanks for your help, trillo!
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