CS304 3RD ASSIGNMENT SOLUTION

//header files
#include<iostream.h>
#include<conio.h>

//class definition
class purchased_item
{
//hidden part
private:
//static data member
static int item_num;
int price;
int quantity;
//interface
public:
//constructor
purchased_item()
{
price = 0;
quantity = 0;
}
//taking input
void input()
{
int price2=0;
int quantity2= 0;

cout<<"enter price and purchased quantity of item "<< ++item_num<<endl;
cout<<"\n\t\tprice:";
cin>>price2;
set_price(price2);

cout<<"\n\t\tQuantity: ";
cin>>quantity2;
set_quantity(quantity2);
cout<<"\n";
}
//setting price
void set_price(int price1)
{
price=price1;
}
//getting price
int get_price()
{
return price;
}
//setting quantity
void set_quantity(int qty)
{
quantity = qty;
}
//getting quantity
int get_quantity()
{
return quantity;
}
//destructor
~purchased_item(){}
};

//initialize static member
int purchased_item::item_num = 0;

//class definition
class Bill
{
//hidden part
private:
purchased_item items[5];
int total_amount;
//interface
public:
//constructor
Bill()
{
total_amount = 0;
}
//taking input
void input()
{
for(int i = 0 ; i <5; i++)
items[i].input();
}
//calculating total amount
void total_amount_cal()
{
for(int i = 0; i <5; i++)
total_amount +=(items[i].get_price()* items[i].get_quantity());
cout<<"\ntotal amount to be paid is "<<total_amount;
}
//destructor
~Bill(){}
};


//main function
int main()
{
//bill object
Bill bill;
//calling input
bill.input();
//calling total_amount_cal
bill.total_amount_cal();
getch();
}