while i tried to make int array[1000][1000][1000] compiler gave error, with array litlle bigger than [510][510][2] compiler halts. why so? if i want to use arrays such big, do i have to use malloc?

Mikael Haapakoski schrieb am Tue, 10 May 2005 17:41:11 +0300:
> while i tried to make int array[1000][1000][1000] compiler gave error, with array litlle bigger than [510][510][2] compiler halts. why so? if i want to use arrays such big, do i have to use malloc?

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On Tue, 10 May 2005 17:41:11 +0300, Mikael Haapakoski wrote:

> while i tried to make int array[1000][1000][1000] compiler gave error, with array litlle bigger than [510][510][2] compiler halts. why so? if i want to use arrays such big, do i have to use malloc?

Maybe because static arrays are created on the stack, your application doesn't have enough stack space? Creating a dynamic array might work.

  int[][][] X;
  X.length = 1000;
  for(int i = 0; i < X.length; i++)
  {
    X[i].length = 1000;
    for(int j = 0; j < X[i].length; j++)
        X[i][j].length = 1000;
  }

Or maybe you can create one dimensional array and do your own indexing...

  int[1000*1000*1000] X;


Just out of curiosity, and this is not a criticism, but why does one need such large arrays in RAM?



-- 
Derek
Melbourne, Australia
11/05/2005 9:15:04 AM

Mikael Haapakoski wrote:
[...]
> i tried to make int array[1000][1000][1000]
[...]

You want to allocate 4 GB of main memory?

-manfred