"a.exe ( source code file - a.cpp) has stopped working."

Question

So , using codeblocks , i have just written a small cpp program. But it unexpectly shows this error (see image). Can't figure out what's wrong.

#include <bits/stdc++.h>
using namespace std;

int main()
{
    int mat[1000][1000];
    cout<<"done";
    return 0;
}

I will be needing 2d array of that size. Anything that could be done ? — Piyush Soni, Mar 24 '18 at 18:16
Runs fine: https://ideone.com/mSo7O4 Try running it inside your IDE so you can get a more meaningful error message. — O.O.Balance, Mar 24 '18 at 18:16
@O.O.Balance Stack space differs from machine to machine, this says nothing. — Hatted Rooster, Mar 24 '18 at 18:17
[What and where are the stack and heap?](https://stackoverflow.com/questions/79923/what-and-where-are-the-stack-and-heap) — miradulo, Mar 24 '18 at 18:18
@SombreroChicken Absolutely. So does "a.exe has stopped working". — O.O.Balance, Mar 24 '18 at 18:18

score 1 · Accepted Answer · answered Mar 24 '18 at 18:55

int mat[1000][1000]; is creating a huge array on the stack. Probably more than your compiler/platform allows.

You have several options:

1) tell your compiler to use more space for the stack.

2) allocate your objects on the heap.

3) just stop using C arrays and use a std::vector instead.

1 Answers1