What is the generator argument in std::copy()? I dont understand what an output iterator is in this context.

Question

std::copy(inputIt it.begin(), inputIt it.end(), outputIt oIt???); I don't understand what it's asking.

Answer 1

You have to show where you want to copy your values.

vector<int> a, b;

std::copy(a.begin(), a.end(), b.begin());

In above example values from vector "a", should be copied to vector "b".

Answer 2

what if it's a mulitset? how would I copy it in then?