// then you can compile this program by typing AT the UNIX prompt
//    (assuming this main function is in a file named my_program.cpp)
//    (including the .cpp files for EVERY function or class INVOLVED
//    in this program)
// g++ -o my_program my_program.cpp x.cpp  
//
// if successful, you get an executable program my_program as a result.

/*-----
  Contract: main: void -> int

  Purpose: either:
           <describe the program being written> OR
           testing program for the functions <f1>, <f2>, ...
  
  Examples: <describe, in prose, what the effect of running this
             main() function should be>

  by: 
  last modified: 
-----*/

#include <iostream>
#include "x.h"
using namespace std;

int main()
{
    //... actions of this main ...

    return EXIT_SUCCESS;
}