The document defines classes for a watch showroom, customer, discount, and bill. It includes default and parameterized constructors for each class. Methods are defined to get and display data for each class. In main(), objects are created for the bill class using default and parameterized constructors. Get and display methods are called to input and output data for billing purposes.

1. ABHISHEK PRATAP
ROLL NO. : 13-101

2. #include<iostream.h>
#include<conio.h>
#include<string.h>
class Titan_showroom
{
protected:
char add[40],color[20],type[20];
public:
Titan_showroom()
{ strcpy(add,"Panjim");
strcpy(color,"White");
strcpy(type,"Analog");
}
Titan_showroom(char ad[],char co[],char ty[])
{ strcpy(add,ad);
strcpy(color,co);
strcpy(type,ty);
}

3. void getdata1()
{ cout<<"n::Enetr the details of Watch::n";
cout<<"nEnter the address of Showroom: ";
cin.getline(add,40);
cout<<"nEnetr the colour of Watch: ";
cin.getline(color,20);
cout<<"nEnetr the type of Watch: ";
cin.getline(type,20);
}
void display1()
{ cout<<"n::Details of Watch::";
cout<<"nAddress of showroom: "<<add;
cout<<"nWatch colour: "<<color;
cout<<"nWatch type: "<<type;
}
};

4. class customer:public Titan_showroom
{
protected:
char name[30],date[20],phone[13];
public:
customer():Titan_showroom()
{ strcpy(name,"Abhay Singh");
strcpy(date,"23-09-2014");
strcpy(phone,"9427711999");
}
customer(char ad[],char co[],char ty[],char na[],char da[],char
ph[]):Titan_showroom(ad,co,ty)
{ strcpy(name,na);
strcpy(date,da);
strcpy(phone,ph);
}

5. void getdata2()
{ clrscr();
cout<<"n::::::::::::::::::::::::::||||Abhishek
Pratap||||:::::::::::::::::::::::::::nn";
cout<<"n**Enter Details**n";
cout<<"n::Enetr the details of Customer::n";
cout<<"nEnter the name of Customer: ";
cin.getline(name,30);
cout<<"nEnetr the date of purchase: ";
cin.getline(date,20);
cout<<"nEnetr the phone no. of Customer: ";
cin.getline(phone,13);
}
void display2()
{ cout<<"nn::Details of Customer::";
cout<<"nName of Customer: "<<name;
cout<<"nDate of purchase: "<<date;
cout<<"nPhone no. of Customer: "<<phone;
}
};

6. class discount
{
protected:
float price,dis,disp,prip;
public:
discount()
{ price=890;
dis=0;
disp=price*dis/100;
prip=price-disp;
}
discount(float pr,float di)
{ price=pr;
dis=di;
disp=price*dis/100;
prip=price-disp;
}

7. void getdata3()
{ clrscr();
cout<<"n::::::::::::::::::::::::::||||Abhishek
Pratap||||:::::::::::::::::::::::::::nn";
cout<<"n**Enter Details**n";
cout<<"n::Enetr the details of Discount::n";
cout<<"nDISCOUNT ON WATCH COST'S MORE
THAN OR EQUAL TO RS.1000n";
cout<<"nEnter the price of Watch: ";
cin>>price;
disc();
}
void disc()
{ if(price>=1000)
{ cout<<"nEnter the discount percentage: ";
cin>>dis;
disp=price*dis/100;
}
prip=price-disp;
}
};

8. class bill:public customer,discount
{
protected:
long int bill_no;
public:
bill():customer(),discount()
{ bill_no=10294;
}
bill(char ad[],char co[],char ty[],char na[],char da[],char ph[],float
pr,float di,long int bn):customer(ad,co,ty,na,da,ph),discount(pr,di)
{ bill_no=bn;
}
void getdata4()
{ Titan_showroom::getdata1();
customer::getdata2();
discount::getdata3();
clrscr();
cout<<"n::::::::::::::::::::::::::||||Abhishek
Pratap||||:::::::::::::::::::::::::::nn";
cout<<"n**Enter Details**n";

9. cout<<"n::Eneter the details of Bill::n";
cout<<"nEnetr the Bill no.: ";
cin>>bill_no;
}
void display4()
{ Titan_showroom::display1();
customer::display2();
cout<<"nn::Bill::";
cout<<"nBill no.: "<<bill_no;
cout<<"nCost of Watch: "<<price;
cout<<"nDisccount percentage: "<<dis;
cout<<"nDiscount amount: "<<disp;
cout<<"nAmount payable: "<<prip;
}
};

10. void main()
{ clrscr();
bill b1,b2;
cout<<"n::::::::::::::::::::::::::||||Abhishek Pratap||||:::::::::::::::::::::::::::nn";
cout<<"n**Enter Details**n";
b1.getdata4();
clrscr();
cout<<"n::::::::::::::::::::::::::||||Abhishek Pratap||||:::::::::::::::::::::::::::nn";
cout<<"n**Details**n";
b1.display4();
getch();
clrscr();
cout<<"n::::::::::::::::::::::::::||||Abhishek Pratap||||:::::::::::::::::::::::::::nn";
cout<<"n**Default construtor**n";
cout<<"n**Details**n";
b2.display4();
getch();
clrscr();
cout<<"n::::::::::::::::::::::::::||||Abhishek Pratap||||:::::::::::::::::::::::::::nn";
cout<<"n**Parameterised construtor**n";
cout<<"n**Details**n";
bill b3("Margaon","Red","Digital","Ajay Kumar","10-06-2014","8806457389",1500,40,123045);
b3.display4();
getch();
clrscr();
}

11. OUT PUT