I was given a c++ main and have to code it so it works.

I am having some trouble understanding the code as I am a bit new to cpp.

Here is the code

int main(int argc, char *argv[]) {
  Class::setAtribute("string"); 
  Class(Class::CONSTANT) << "starting up..."; 
}

Some questions:

1. How can the first line work with no variables? Is it static?

2. The second line is really strange for me, what I can make out is a Constructor that takes in a class constante and then prints it out somehow?

   If someone could explain me this bit of code it would be great!

   Thanks in advance.