piece1.cpp

来自「经典vc教程的例子程序」· C++ 代码 · 共 34 行

// Fig. 10.1: piece1.cpp
// Member function definitions for class PieceWorker
#include <iostream.h>
#include "piece1.h"

// Constructor for class PieceWorker
PieceWorker::PieceWorker( const char *first, const char *last, 
                          double w, int q )
   : Employee( first, last )  // call base-class constructor
{
   setWage( w );
   setQuantity( q );
}

// Set the wage
void PieceWorker::setWage( double w ) 
   { wagePerPiece = w > 0 ? w : 0; }

// Set the number of items output
void PieceWorker::setQuantity( int q ) 
   { quantity = q > 0 ? q : 0; }

// Determine the PieceWorker's earnings
double PieceWorker::earnings() const
   { return quantity * wagePerPiece; }

// Print the PieceWorker's name 
void PieceWorker::print() const
{
   cout << "\n     Piece worker: ";
   Employee::print();
}