Quick ? on copy constructor

Just to make sure I have this right with the whole copy constructor thing:

you create a class(Example)
create the copy constructor ( Example(Example & example1) )

define the copy constructor (
Example::Example(Example & example1)
{
Any data I want the other 'instance?' to have
}
)
then you can create an instance if the class ( Example Ex )
then you can use the copy constructor ( Example Ex2(Ex) )

then ex2 would have any data I placed in the copy constructor along with having access to all the functions in Example?

If I'm totally of the ball here just tell me I'm messed up and I'll go back to beating my head on the keyboard. Any pointers will be greatly appreciated. Thanx

Yeah... you pretty much have it. Generally, the copy constructor copies stuff from the other argument passed to it, but it doesn't have to.

Thanx alot, so the copy constructor pretty much is used to copy variables from one instance to another like:
int variableex2 = variableex?

I appreciate you guys putting up with my amateur questions.

Well.. there is no constructor for int, as that is a native type, and not a class, but yeah, you have the idea.