/* @file: AbstractPackage.h
 * Definition of Abstract class Package
 * @c - Planet Express  
 * 
 * Version 14.1
 */

#ifndef ABSTRACTPACKAGE_H
#define ABSTRACTPACKAGE_H

#include <string>

using namespace std; 


//----------------------------------------
/* _______________________
  /                       \
  | AbstractPackage Class |
  \_______________________/
   
    ABSTRACT CLASS

    PURPOSE: Base class for all Package classes.
 
*/
class AbstractPackage {
protected:
  string m_from;    // the name of the sender
  string m_to;      // the name of the receiver
   
public:  
// Purpose: Constructor
// Postconditions: name of from and to set to parameters
// -- INLINE
   AbstractPackage(string f, string t) :
	     m_from(f), m_to(t)	 
	 {}
   
// Purpose: Returns the charge of a package.
// -- VIRTUAL
virtual float getCharge() const = 0;

// Purpose: Returns the package's sender.
// -- VIRTUAL
virtual string getFrom() const = 0;

// Purpose: Returns the package's receiver.
// -- VIRTUAL
virtual string getTo() const = 0;


// Purpose: Destructor
// -- INLINE
virtual ~AbstractPackage() {}


}; //Abstract Package


#endif