How do you increment a vector for classes? C++

[Broko668]

I've been working on a project to make a ATM bank application but I've ran into a problem. I need to make an unlimited number of vectors of the class Bank I've created.

I can't seem to find out how. I tried push_back but it did not work for me.

I know that there are some variables and loops that aren't used properly. I believe that this is all the code I need to display to get my question resolved.

using namespace std;

int main()
{
	bool loop1 = true;
	bool loop2 = true;
	bool loop3 = true;
	bool loop4 = true;
	int i = 0;
	int clientInt;

	while (loop1)
	{
		vector<Bank> clients(2);

		while (loop2)
		{
			while (loop3)
			{
				clients[i].set_account(clients);

				if (clients[i].get_account_setup() == false)
					break;

				while (loop4)
				{
					clients[i].main_menu(clients, i);

					if (clients[i].get_mm_response() == 4)
						loop4 = false; i++;
				}
				//cout << i << endl; // for debugging purposes

				loop4 = true;
			}

			loop2 = false;
		}

		cout << endl << endl;
		system("pause");
		return 0;
	}
}

[weaknessforcats]

This should work:

vector<Bank> clients;

Bank b;

clients.push_back(b);

What happens when you do this?

Of course, this example presumes necessary constructors are available.

[Broko668]

It worked for me. It did what I asked for, thanks!

But now I need to know why did it work? If that's not too much to ask. I didn't understand what the compiler was trying to tell me. I understood how push_back worked for other basic types of vectors but not for this one.

[weaknessforcats]

I don't know what error you were getting but all C++ library objects, like vector, presume you have a well-behaved class. That is, all necessary constructors, destructors, operator overloads, and methods are in place.

Further, the type in the push_back() must be the same type used to create the vector.