How to convert vector iterator to int in C++

Question

I am looking for an element in a C++ vector, and when I find it, I want to get found element\'s index in a numerical form(integer, float).

My naive attempt is this :

Answer 1

If you want the index of the found element, then that's the distance from the start of the sequence:

index = it - myvector.begin();

or, since C++11,

index = std::distance(myvector.begin(), it);

which will work with any forward iterator type, not just random-access ones like those from a vector.