User-defined Output Stream Manipulators in C

Question

I am learning C++, and in the part of user-defined output stream manipulatior, I am stuck. This is the example code:

    #include 
     using         


        

Answer 1

cout's left shift operator calls endLine with cout as an argument. Functions (technically function pointers) don't need to be called when you write their names; you can pass them around as values and have some other code call them later.