C++ list, get number of elements in a list?

Quick question. I've got a list and I simply added just one element to the list. But when I print out myList.size(), it returns 18? Even though there is one element?

To add my element I use: myList.push_bac开发者_如何学Pythonk(element);

---

§23.3.6 says:

The member function size() returns the number of elements in the container.

This means that

• 1) you have a broken C++ environment, or

• 2) you have, somehow, added more elements to your list.

Unfortunately, it's hard to tell which is the case, as you haven't posted enough information. What would be nice is a small, complete, examples that demonstrates what you are trying to do, a description of what happens and what you expected to happen.

---

Another possibility that i can think of is that the list has been created with a finite size using the following constructor :

explicit list ( size_type n, const T& value= T(), const Allocator& = Allocator() );

---

If I am not wrong you want to do something like this...I performed a quick search and found the following..

int main ()
{
    list<int> myints;
    cout << "0. size: " << (int) myints.size() << endl;

    for (int i=0; i<10; i++) myints.push_back(i);
    cout << "1. size: " << (int) myints.size() << endl;

    myints.insert (myints.begin(),10,100);
    cout << "2. size: " << (int) myints.size() << endl;

    myints.pop_back();
    cout << "3. size: " << (int) myints.size() << endl;

    return 0;
}

---

At the start do MyList.clear() then push the elements and finally check the size.