[Edited] What is "class" code?

[micros24]

What is the user code? what I mean is the code "user" itself. Do you get my point?

#include <iostream>
using namespace std;

int main()
{
   user user1;
}

[Edit]
Okay, i just saw something like class user. Now, my new question is, what is the code "class"?

#include <iostream>
using namespace std;

int main()
{
   class user;

   user user1;
}

[Codermik]

Not a clue what you mean :)

[MikeyBoy]

Classes are an absolutely fundamental concept in Object Oriented Programming. Any C++ or OOP textbook or tutorial should tell you what they are. For example, on this very site:

http://www.cplusplus.com/doc/tutorial/classes/

[Uk Marine]

classes are usually declared outside of the main function, and they're similar to any data structures you've seen before, they contain data members and member functions.