Re: GPS 2.1.0w (20041004) Snapshot

// Fig. 6.7: salesp.cpp
// Member functions for class SalesPerson
#include <iostream>

using std::cout;
using std::cin;
using std::endl;

#include <iomanip>

using std::setprecision;
using std::setiosflags;
using std::ios;

#include "salesp.h"

// Constructor function initializes array
SalesPerson::SalesPerson()
{
   for ( int i = 0; i < 12; i++ )
      sales[ i ] = 0.0;
}

// Function to get 12 sales figures from the user 
// at the keyboard
void SalesPerson::getSalesFromUser()
{
   double salesFigure; 

   for ( int i = 1; i <= 12; i++ ) {
      cout << "Enter sales amount for month " << i << ": ";
      cin >> salesFigure;
      setSales( i, salesFigure );
   }
}

// Function to set one of the 12 monthly sales figures.
// Note that the month value must be from 0 to 11.
void SalesPerson::setSales( int month, double amount )
{
   if ( month >= 1 && month <= 12 && amount > 0 )
      sales[ month - 1 ] = amount; // adjust for subscripts 0-11
   else
      cout << "Invalid month or sales figure" << endl;   
}

// Print the total annual sales
void SalesPerson::printAnnualSales()
{
   cout << setprecision( 2 )
        << setiosflags( ios::fixed | ios::showpoint )
        << "\nThe total annual sales are: $"
        << totalAnnualSales() << endl;
}

// Private utility function to total annual sales
double SalesPerson::totalAnnualSales()
{
   double total = 0.0;

   for ( int i = 0; i < 12; i++ )
      total += sales[ i ];

   return total;
}


/**************************************************************************
 * (C) Copyright 2000 by Deitel & Associates, Inc. and Prentice Hall.     *
 * All Rights Reserved.                                                   *
 *                                                                        *
 * DISCLAIMER: The authors and publisher of this book have used their     *
 * best efforts in preparing the book. These efforts include the          *
 * development, research, and testing of the theories and programs        *
 * to determine their effectiveness. The authors and publisher make       *
 * no warranty of any kind, expressed or implied, with regard to these    *
 * programs or to the documentation contained in these books. The authors *
 * and publisher shall not be liable in any event for incidental or       *
 * consequential damages in connection with, or arising out of, the       *
 * furnishing, performance, or use of these programs.                     *
 *************************************************************************/

// Fig. 6.7: fig06_07.cpp
// Demonstrating a utility function
// Compile with salesp.cpp
#include "salesp.h"

int main()
{
   SalesPerson s;         // create SalesPerson object s
   
   s.getSalesFromUser();  // note simple sequential code
   s.printAnnualSales();  // no control structures in main
   return 0;
}




/**************************************************************************
 * (C) Copyright 2000 by Deitel & Associates, Inc. and Prentice Hall.     *
 * All Rights Reserved.                                                   *
 *                                                                        *
 * DISCLAIMER: The authors and publisher of this book have used their     *
 * best efforts in preparing the book. These efforts include the          *
 * development, research, and testing of the theories and programs        *
 * to determine their effectiveness. The authors and publisher make       *
 * no warranty of any kind, expressed or implied, with regard to these    *
 * programs or to the documentation contained in these books. The authors *
 * and publisher shall not be liable in any event for incidental or       *
 * consequential damages in connection with, or arising out of, the       *
 * furnishing, performance, or use of these programs.                     *
 *************************************************************************/

// Fig. 6.7: salesp.h
// SalesPerson class definition
// Member functions defined in salesp.cpp
#ifndef SALESP_H
#define SALESP_H

class SalesPerson {
public:
   SalesPerson();                // constructor
   void getSalesFromUser(); // get sales figures from keyboard
   void setSales( int, double ); // User supplies one month's
                                 // sales figures.
   void printAnnualSales();

private:
   double totalAnnualSales();	 // utility function
   double sales[ 12 ];           // 12 monthly sales figures
};

#endif



/**************************************************************************
 * (C) Copyright 2000 by Deitel & Associates, Inc. and Prentice Hall.     *
 * All Rights Reserved.                                                   *
 *                                                                        *
 * DISCLAIMER: The authors and publisher of this book have used their     *
 * best efforts in preparing the book. These efforts include the          *
 * development, research, and testing of the theories and programs        *
 * to determine their effectiveness. The authors and publisher make       *
 * no warranty of any kind, expressed or implied, with regard to these    *
 * programs or to the documentation contained in these books. The authors *
 * and publisher shall not be liable in any event for incidental or       *
 * consequential damages in connection with, or arising out of, the       *
 * furnishing, performance, or use of these programs.                     *
 *************************************************************************/