/* File: hello2-eof.cpp
   greets the user by name 
   uses an eof-controlled while loop
 */

#include <iostream>    //for cout, cin,  endl
#include <string>      //for type string
using namespace std;   //make std names available w/o std:: prefix

int main(){
  string fname;        //first name

  //prompt and read user's first name
  cout << "enter first name (c-d to exit): ";
  cin >> fname;

  while(cin){

    //print greetings and flush the i/o buffer
    cout << "Hello, " << fname << " and fare thee well!" << endl;

    //prompt and read user's first name
    cout << "enter first name (c-d to exit): ";
    cin >> fname;

  }

  cout << endl << "Exiting.." << endl;
  return 0;  
}


/* NOTES:

The return statement may be omitted in main().
If it's omitted, a "return 0;" statement is inserted
automatically by the compiler.

main() is special in this sense, as this will not be
done for any other function.


EXERCISES:

Change the name of main() to Main() and recompile. 
What happens?

Comment out the header <iostream> and recompile.
What happens?

Comment out the header <string> and recompile.
What happens?

Extend the program to greet the user by first and last name.

*/