    #include <iostream>

    /*
     *  The next command allows using simpler names for things in the
     *  std namespace.  The fullname of "cout" is "std::cout" and the
     *  fullname of "endl" is "std::endl".  So this makes programming
     *  easier.
     */
    using namespace std;

    /*
     *  The execution of a C++ program begins with the function named
     *  "main".  This is after this comment.
     *
     *  The parameter argc is the number of items on the command line
     *  when the program is executed.  This will be 1 if only the name
     *  of the program is entered.
     *
     *  The second parameter is an array of character pointers which
     *  is really an array of C style strings which are the components
     *  of the command line.
     */
    int main ( int argc, char **argv )
    {
    /*
     *  cout followed by the << operator outputs something.  In the
     *  following line it outputs a string and then uses endl.
     *
     *  endl effectively tells cout to actually output whatever it
     *  has been accumulating.
     */
        cout << "Hello World!\n" << endl;

    /*
     *  Here we return 0 from main which is the normal way to exit
     *  a program.
     * /
        return 0;
    }