shoppingitem.cpp

C++大学简明教程,解压就行没有密码。希望对大家有用

// Tutorial 16: ShoppingItem.cpp
// Class ShoppingItem member-function definitions.
#include <iostream> // required to perform C++-style stream I/O

using namespace std; // for accessing C++ Standard Library members

#include "ShoppingItem.h"  // ShoppingItem class definition

// constructor
ShoppingItem::ShoppingItem( string &itemName, int itemQuantity, 
   ShoppingItem *nextPointer )
{
   // initialize data members
   setName( itemName ); // set the name
   setQuantity( itemQuantity ); // set the quantity
   setNextItem( nextPointer ); // set pointer to the next item

} // end constructor

// set the item's name
void ShoppingItem::setName( string &itemName )
{
   name = itemName;
} // end function setName

// return a copy of the item's name so that changes made to 
// the returned value do not affect the object's name member
string ShoppingItem::getName()
{
   return name;

} // end function getName

// set the quantity for this item
void ShoppingItem::setQuantity( int itemQuantity )
{
   if ( itemQuantity < 0 )
   {
      quantity = 0;
   } // end if
   else
   {
      quantity = itemQuantity;
   } // end else

} // end function setQuantity

// return the item's quantity
int ShoppingItem::getQuantity()
{
   return quantity;

} // end function getQuantity

// set the pointer to the next ShoppingItem in the list
void ShoppingItem::setNextItem( ShoppingItem *nextPointer )
{
   next = nextPointer;

} // end function setNextItem

// return the pointer to the next item
ShoppingItem *ShoppingItem::getNextItem()
{
   return next;

} // end function getNextItem

// return the pointer to the next item
void ShoppingItem::display()
{
   cout << "\nName: " << getName() << endl;
   cout << "Quantity: " << getQuantity() << endl;

} // end function display

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