Question

I’m getting a stack overflow on the first iteration of this for loop

for (int q = 0; q < SIZEN; q++)
{
    cout<<nList[q]<<" ";
}

nList is a vector of type int with 376 items. The size of nList depends on a constant defined in the program. The program works for every value up to 376, then after 376 it stops working.

Any thoughts?

Answer 1

If by “stops working”, you mean crashes, then you’re probably reading past the end of the buffer. vector::operator[] is not range checked, so it will let you shoot yourself in the foot.

If you want to traverse a vector, use an iterator, or at the very least nList.size().

So with least modifications to your code:

for (int q = 0; q < nList.size(); q++)
{
    cout << nList[q] << " ";
}

or with iterators

for (std::vector<int>::const_iterator it = nList.begin();
     it != nList.end(); ++it) {
  cout << *it << " ";
}