Size of array in Visual C++ Express

[Leandro P]

Dear all,

I'm having trouble setting an array of 30,000 rows and 3 columns in Visual C++ EXpress 2010.

If I set the rows to 20,000 is fine but whren I use 30,000 or greater then it crashes.

Do you know how to increase the size of the arrays? Is this an issue from the Express compiler?

Best regards,

Leandro

[Ganado]

It could be that what you're trying to do is just too big for the stack.
The stack is a part of your RAM that is relatively small.

For big arrays you will have to use the "heap", which is for dynamically allocated memory.

so instead of int my_array[30000*3];
you'd have to do...
int* my_array = new int[30000*3];
...and then delete the data once you're done with it
delete [] my_array;

BETTER SOLUTION:
Use the standard library's std::vector
http://en.cppreference.com/w/cpp/container/vector

#include <vector>
std::vector<int> my_array(30000*3);

use [] operator to access elements just like a regular array.
my_array[0] = 5;
And you don't have to worry about deleting the data, it is done for you.

[Leandro P]

Thanks very much Ganado!! I'll try this one.