class CRealEstate
{
public:
// constructor
CRealEstate(int num_of_rooms , const string & address)throw(string*)
{
try
{
m_num_of_rooms=num_of_rooms;
if(address=="\n")
throw "Wronge Address..\n";
m_address=address;
}
catch(const char *str)
{
cout<<str<<endl;
}
}
virtual void Print()const =0;
virtual unsigned Profit()const =0;
friend ostream& operator<<(ostream& os , const CRealEstate &p)
{
p.Print();
return os;
}
protected:
int m_num_of_rooms;
string m_address;
};
class CRent : public CRealEstate
{
public:
CRent(int monthlyrent,int periodyears,int room,string place):CRealEstate(room,place),m_monthly_rent(monthlyrent),m_period_years(periodyears){}
protected:
int m_monthly_rent;
int m_period_years;
};
class CSale : public CRealEstate
{
public:
CSale(int room,string place,int sellprice):CRealEstate(room,place),m_sell_price(sellprice){}
void Print()const
{
cout<<"\n\nFor SALE: "<<m_address<<", "<<m_sell_price<<endl;
}
unsigned Profit()const
{
return m_sell_price;
}
private:
int m_sell_price;
};
class CRentAHouse:public CRent
{
public:
CRentAHouse(int room,string place,int monthlyRent,int periodYears,int gardenArea):CRent(monthlyRent,periodYears,room,place),m_garden_area(gardenArea){}
void Print()const
{
cout<<"\n\nHouse for RENT: "<<m_address<<",\n"<<"monthly rent: "<<m_monthly_rent<<"The garden area is: "<<m_garden_area<<endl;
}
unsigned Profit()const
{
return m_monthly_rent;
}
private:
int m_garden_area;
};
unsigned sumProfit(const CRealEstate* p[], unsigned n)
{
unsigned i;
unsigned sumPro=0;
for(i=0;i<n;i++)
{
// cumulative profit
sumPro += *p[i]; ////////????i need to get the cumlative profit from the classes.
cout<<sumPro<<endl;
}
return sumPro;
}
unsigned &operator+=(unsigned value,const CRealEstate & p)
{
value+=p.Profit();
return value;
}i dont know why it doesn't work..
maybe you can help me.
