Declaring 2d arrays globally and locally

[uzferry]

Hello. In this example

int main()
{
    int A[3000][3000];
    return 0;
}

the program doesn't work, and as far as I understand it's because A is too large.

but

int A[3000][3000];

int main()
{
    return 0;
}

Here I declare A as global array, yes? In this case, everything works just fine, no errors, program returns 0.
Why is this happening? And if I want to use arrays with large dimensions,is declaring array globally acceptable?
Thank you.

[minomic]

Actually the first one runs just fine. What error do you have?

[uzferry]

It says "program.exe" has stopped working after I compile, and it returns big negative number

[minomic]

Quite strange... I just tried and nothing unusual happens.

[dhayden]

Local variables are stored on the stack which is typically smaller than the space available for global variables. Your array takes 36,000,000 bytes for 32-bit integers and twice that for 64 bit integers.

You can probably set the stack size in your compiler options.