Previous years Examination Questions
2 Marks Questions
Question 1:
What is the relationship between a class and an object? Illustrate with a suitable example. Delhi 2013C
Аnswers:
Class
• It is a user-defined data type.
• It is a logical framework that combines data and function into a single unit.
e.g
class GABS
{
int a,b;
public:
void set()
{
a=10;
b=20;
}
void show()
{
cout<<"Value of a and b is"<<a<<b<<endl;
};
Object
• It is an instance of a class.
• It is a physical entity that means it occupies space in a memory. It’s used to access members of the class.
e.g. Suppose “GABS” is the name of the class.
GABS G1, G2;
G1.show( );
Both G1 and G2 are the objects of the class “GABS”
Question 2:
Rewrite the following program after removing the syntactical errors (if any). Underline each correction. Delhi 2012
#include<iostream.h>
class Book
{
long Bld.Qty;
public:
void Purchase()
{
cin>>BId<<Qty;
}
void Sale
{
cout<<setw(5)<<BId<<"o1d:”<<Qty<<endl;
cout<<"New:"<<—Qty<<endl;
}
};
void main()
{
Book B;
B.Purchase();
Sale();
B.Sale();
}
Аnswers:
#include<iostream.h>
#include<iomanip.h>
class Book
{
long Bid, Qty;
pub!ic:
void Purchase()
{
cin>>BId>>Qty;
}
void Sale()
{
cout<<setw(5)<<BId<<"o1d:"<<Qty<<endl;
cout<<"New:"<<--Qty<<endl;
}
};
void main()
{
Book B;
B.Purchase();
B.Sale();
B.Sale();
}
Question 3:
Rewrite the following program after removing the syntactical errors (if any). Underline each correction. Delhi 2012
#include<iostream.h>
class Item
{
long IId, Qty;
public:
void Purchase
{
cin>>IId>>Qty;
}
void Sale()
{
cout<<setw(5)<<IId<<”old:"<<Qty<<endl;
cout<<"New: "<<--Qty<<endl;
}
};
void main()
{
Item I;
Purchase():
I.Sale();
I.Sale();
}
Аnswers:
#include<iostream.h>
#include<iomanip.h>
class Item
{
long lid,Qty;
public:
void Purchase()
{
cin>>IId>>Qty;
}
void Sale()
{
cout<<setw(5)<<IId<<"01d:"<<Qty<<endl;
cout<<"New:"<<--Qty<<endl;
}
};
void main()
{
Item I;
I.Purchase();
I.Sale();
I.Sale();
}
Question 4:
Rewrite the following program after removing the syntactical error(s) (if any). Underline each correction. Delhi 2012C
#include<iostream.h>
#include<stdio.h>
Class OFFER
{
int OfferId;
char Description[80]:
void Show
{
cout<<offerId<<" : ”<<Description<<endl;
}
public:
void Enter
{
cin>>offerId;
gets>>Description;
}
};
void main()
{
OFFER Obj;
Obj.Enter();
Obj.Show();
}
Аnswers:
#include<iostream.h>
#include<stdio.h>
class OFFER
{
int OfferId;
char Description[80];
void Show()
{
cout<<offerld<<":"<<Description<<endl;
}
public:
void Enter()
{
cin>>offerId;
gets(Description):
}
};
void main()
{
OFFER Obj;
Obj.Enter();
//Obi.Show();
//Show()cannot be called because
//it is a private member
}
Question 5:
What is the difference between members in private visibility mode and the members in public visibility mode inside a class? Also give a suitable C++ code to illustrate both. Delhi 2012
or
Differentiate between public and private visibility modes in context of object oriented programming using a suitable example. Delhi 2011
Аnswers:
A member declared as private remains hidden from outside world and it can only be accessed by the member function of the class in which it is declared. A member declared as public is made available to the outside world. That is , it can be accessed by any function, any expression in the program but only by using an object of the same class type.
e.g-
class A
{
private:
int x;
void show();
public:
int y;
void get();
};
The members x and show( ) are private and these are not accessible outside the class where the members y and get( ) are public so these are accessible outside the class.
Question 6:
When is public visibility of a mode applied to members of a class? Also give an example to illustrate. Delhi 2011C
Аnswers:
When we need to access the members from out side the class then we apply public mode preceding any members.
e.g.
#include<iostream.h>
class ABC
{
public:
int b;
void show()
{
cout<<"b ="<<b;
}
};
void main()
{
ABC x;
x.b=20;
x.show();
}
Question 7:
Rewrite the following C++ program code after removing the syntax error(s) (if any). Underline each correction.
All India 2010
include<iostream.h>
class FLIGHT
{
long FlightCode;
char Description[25];
public
void Addlnfo()
{
cin>>FlightCode;
gets(Description);
}
void ShowInfo()
{
cout<<FlightCode«":" <<Description<<endl;
}
};
void main()
{
FLIGHT F;
Addlnfo.F();
Showlnfo.F();
}
Аnswers:
# include<iostream.h>
#include<stdio.h>
class FLIGHT
{
long FlightCode;
char Description[25];
public:
void Addlnfo()
{
cin>>FlightCode;
gets(Description);
}
void Showlnfo()
(
cout<<FlightCode<<":"<<Description<<endl;
}
};
void main()
{
FLIGHT F;
F.Addlnfo();
F.ShowInfo();
}
Question 8:
Rewrite the following C++ program code after removing the syntax error(s) (if any). Underline each correction.
Delhi 2010
#include<iostream.h>
class TRAIN
{
long TrainNo;
char Description[25];
public
void Entry()
{
cin>>TrainNo;
gets(Description);
}
void Display()
{
cout<<TrainNo<<":"<<Description<<endl;
}
};
void main( )
{
TRAIN T;
Entry. T();
Display.T();
}
Аnswers:
#include<iostream.h>
#include<stdio.h>
class TRAIN
{
long TrainNo;
char Description[25];
public:
void Entry()
{
cin>>TrainNo;
gets(Description);
}
void Display()
{
cout<<TrainNo<<" : "<<Description<<endl;
}
};
void main()
{
TRAIN T;
T.Entry();
T.Display();
}
Question 9:
Rewrite the following program after removing the syntactical error(s) (if any) Underline each correction. Delhi 2009C
#include<iostream.h>
class Transport
{
char Model[20];
char Name[20];
void Get()
{
gets(Model);
gets(Name);
}
void Show()
{
cout<<Model<<endl;
puts(Name);
}
};
void main( )
{
Transport T;
T.Get();
Show();
}
Аnswers:
#include<iostream.h>
#include<stdio.h>
class Transport
{
char Model[20];
char Name[20];
public:
void Get()
{
gets(Model);
gets(Name);
}
void Show()
{
cout<<Model<<endl;
puts(Name);
}
};
void main()
{
Transport T:
T.Get();
T.Show();
}
4-5 Marks Questions
Question 10:
Write the definition of a class BOX in C++ with the following description: All India 2017
Аnswer:
class Box
{
int BoxNumber;
float Side, Area;
void ExecArea()
{
Area = Side*Side;
}
public:
void GetBox()
{
cout<<"Enter the values of BoxNumber and Side”;
cin>>BoxNumber;
cin>>Side;
ExecArea();
}
void ShowBox()
{
cout<<"BoxNumber:"<<BoxNumber<<endl;
cout<<”Side:"<<Side<<endl:
cout<<”Area:"<<Area;
}
Question 11:
Write the definition of a class METROPOLIS in C++ with following description: Delhi 2016
Аnswer:
class METROPOLIS
{
int MCode;
char MName[20];
long int MPop;
float Area, PopDens;
void CalDen()
{
PopDens = MPop/Area;
}
public:
void Enter()
{
cout<<"\nEnter the code";
cin>>MCode;
cout<<"\nEnter the name";
gets(MName);
cout<<"\n Enter the population";
cin>>MPop;
cout<<"\n Enter the area coverage";
cin>>Area;
CalDen();
}
void ViewALL()
{
cout<<"\nCode: "<<MCode;
cout<<"\nName: "<MName;
cout<<"\nPopulation:"<<MPop;
cout<<"\nArea Coverage : "<<Area ;
cout<<"\nPopulation Density :"<<PopDens;
if(PopDens>12000)cout<<"Highly Populated Area";
}
};
Question 12:
Write the definition of a class CITY in C++ with following description: All India 2016
Аnswer:
class CITY
{
int Ccode;
char CName[20];
long int Pop;
float KM, Density;
void DenCal()
{
Density = Pop/KM;
}
public :
void Record()
{
cout<<"\nEnter the city code"
cin<<Ccode;
cout<<"\nEnter the city name"
gets(CName);
cout<<"\nEnter city’s population"
cin>>Pop;
cout<<"\nEnter the Area coverage by city";
cin>>KM;
DenCal ();
}
void View()
{
cout<<"\nCity code:"<<Ccode;
cout<<"\nCity name:"<<CName;
cout<<"\nPopul at ion:"<<Pop;
cout<<"\nArea coverage:"<<KM;
cout<<"\nPopul ation density:"<<Density;
if(Density>10000)
cout<<"Highly Populated City";
}
};
Question 13:
Write the definition of a class PIC in C++ with following description Delhi 2015
Аnswer:
class PIC
{
int Pno;
char Category[20];
char Location[20];
void FixLocation()
{
if(strcmp(Category,"Antique”)==0)
strcpy(Location,"Ustad Khan");
else if(strcmp(Category,"Modern" )==0)
strcpy(Location,"Jim Plaq”);
else if(strcmp(Category,”Classic”)==0)
strcpy(Location,"Amina");
}
public:
void Enter()
{
cout<<"\nEnter the picture number";
cin>>Pno;
cout<<"\nEnter the category"; gets(Category);
FixLocation();
}
void SeeAll()
{
cout<<"\nPicture number:"<<Pno;
cout<<"\nCategory: "<<Category;
cout<<"\nLocation:"<<Location;
}
};
Question 14:
Write the definition of a class Photo in C++ with following description: All Indio 2015
Аnswer:
class Photo
{
int Pno;
char Category[20];
char Exhibit[20];
void FixExhibit()
{
if(strcmp(Category,"Antique")== 0)
strcpy(Exhibit, "Zaveri");
else if(strcmp(Category,"Modem") == 0)
strcpy(Exhibit, "Johnsen");
else if(strcmp(Category,"Classic") == 0)
strcpy(Exhibit, "Terenida”);
}
public:
void Register()
{
cout<<"\nEnter the photo number";
cin>>Pno;
cout<<"\nEnter the category";
gets(Category);
FixExhibit();
}
void ViewAll()
{
cout<<"\nPhoto number :"<<Pno;
cout<<"\nCategory:"<<Category;
cout<<"\nExhibit:”<<Exhibit;
}
};
Question 15:
Write the definition of a class STAFF in C++ with following description: All India 20isc
Public Members
- Enroll( ) //A function to allow user to enter values
//SID, Type, Name and call
//AssignPay( ) function - SeeData( ) //A function to display all the data members
Аnswer:
class STAFF
{
long int SID;
char Type;
float Pay;
char Name[30];
void AssignPay()
{
if(Type == 'D')
Pay = 95000;
else if(Type == 'M')
Pay = 75000;
else if (Type == 'E')
Pay = 60000;
else if(Type == 'S')
Pay = 45000;
}
public:
void Enroll()
{
cout<<”Enter the values of staff ID, Type, Name";
cin>>SID;
cin>>Type;
gets(Name);
AssignPay();
}
void seeData()
{
cout<<SID<<Type<<Name<<Pay;
}
};
Question 16:
Define a class Seminar with the following specification private members: Delhi 2013C
Seminarld long
Topic string of 20 characters
VenueLocation string of 20 characters
Fee float
CalcFee( ) function to calculate Fee depending on VenueLocation
| Venue Location | Fee |
| Outdoor | 5000 |
| Indoor Non-AC | 6500 |
| Indoor AC | 7500 |
Public members
Register( ) function to accept values for Seminarld, Topic, VenueLocation and call CalcFee( ) to calculate Fee.
ViewSeminarf( ) function to display all the data members on the screen.
Аnswer:
class Seminar
{
long SeminarId;
char Topic[20]. VenueLocation[20];
float Fee;
void CalcFee()
{
if(strcmp(VenueFocation,"Outdoor")==0)
Fee=5000;
else if(strcmp(Venuetocation,"Indoor Non-AC")==0)
Fee=6500;
else if(strcmp(VenueFocation,"Indoor AC")==0)
Fee=7500;
}
public:
void Register()
{
cout<<"Enter Seminar Id";
cin>>SeminarId;
cout<<"Enter Topic";
gets(Topic);
cout<<"Enter Venue Location";
gets(VenueLocation);
CalcFee();
}
void ViewSeminar()
{
cout<<"SeminarId:"<<SeminarId<<endl;
cout<<"Topic: "<<Topic<<endl;
cout<<"Venue Location;"<<VenueFocation<<endl;
cout<<"Fee is:"<<Fee;
}
};
Question 17:
Define a class RESTRA in C++ with following description: Delhi 2012
Private members
- FoodCode of type int
- Food of type string
- FType of type string
- Sticker of type string
- A member function GetStickerf( ) to assign the following values for Food Sticker as per the given FType
FType Sticker
Vegetarian GREEN
Contains Egg YELLOW
Non-Vegetarian RED
Public members
- A function GetFood( ) to allow user to enter values for FoodCode, Food, FType and call function GetSticker( ) to assign Sticker.
- A function ShowFoodf( ) to allow user to view the content of all the data members.
Аnswer:
class RESTRA
{
int FoodCode;
char Food[30], FType[20],Sticker[20];
void GetSticker()
{
if(strcmp(FType,"Vegetarian”)==0)
strcpy(Sticker,"GREEN");
else if(strcmp(FType,"Contains Egg")==0)
strcpy(Sticker,"YELLOW");
else if(strcmpCFType,"Non-Vegetarian")==0)
strcpy(Sticker,"RED”);
}
public:
void GetFood()
{
cout<<"Enter FoodCode, Food, Food Type";
cin>>FoodCode;
gets(Food);
gets(FType);
GetSticker();
}
void ShowFood()
{
cout<<"Entered values of FoodCode, Food, FoodType,Sticker";
cout<<FoodCode<<Food<<FType<<Sticker;
}
};
Question 18:
Define a class SUPPLY in C++ with following description: All Indio 2012
Private members
- Code of type int
- FoodName of type string
- Sticker of type string
- FoodType of type string
- A member function GetTypef ( ) to assign the following values for FoodType as per the given Sticker
Sticker FoodType
GREEN Vegetarian
YELLOW Contains Egg
RED Non-Vegetarian
Public members
- A function FoodIn( ) to allow user to enter values for Code, FoodName, Sticker and call function GetType( ) to assign respective FoodType.
- A function FoodOut( ) to allow user to view the content of all the data members.
Аnswer:
class SUPPLY
{
int Code;
char FoodName[30],Sticker[30];
char FoodType[20];
void GetType()
{
if(strcmp(Sticker, "GREEN”)==0)
strcpy(FoodType,"Vegetarian" );
else if(strcmp(Sticker,"YELLOW")==0)
strcpy(FoodType,"Contains Egg");
else if(strcmp(Sticker,"RED")==0)
strcpy(FoodType,"Non -Vegeta rian");
}
public:
void FoodIn()
{
cout<<"Enter Code, FoodName, Sticker";
cin>>Code;
gets(FoodName);
gets(Sticker);
GetType();
}
void Food0ut()
{
cout<<"Code,FoodName,Sticker,FoodType are";
cout<<Code<<FoodName<<Sticker<<FoodType;
}
};
Question 19:
Define a class Candidate in C++with following description: Delhi 2o11
Private members
- A data member RNo (Registration Number) of type long
- A data member Name of type string
- A data member Score of type float
- A data member Remarks of type string
- A member function AssignRem( ) to assign the remarks as per the score obtained by a candidate.
- Score range and the respective remarks are shown as follow:
Score Remarks
>=50 Selected
less than 50 Not Selected
Public members
- A function ENTER( ) to .allow user to enter values for RNo, Name, .Score and call function AssignRem( ) to assign Remarks.
- A function DISPLAY( ) to allow user to view the content of all data members.
Аnswer:
class Candidate
{
long RNo;
char Name[40];
float Score;
char Remarks[20];
void AssignRem()
{
if(Score>=50)
strcpy(Remarks,"Selected");
else
strcpy(Remarks,"Not Selected");
}
public:
void ENTER()
{
cout<<"Enter the values for Rno,Name,Score”;
cin>>RNo;
gets(Name);
cin>>Score;
AssignRem();
}
void DISPLAY()
{
cout<<RNo<<Name<<Score<<Remarks;
}
};
Question 20:
Define a class Applicant in C++ with following description: All IndiA 2011
Private members
- A data member ANo (Admission Number) of type long
- A data member Name of type string
- A data member Agg (Aggregate Marks) of type float
- A data member Grade of type char
- A member function GradeMe( ) to find the grade as per the aggregate marks obtained by a student. Equivalent aggregate marks range and the respective grades are shown as follow:
Aggregate marks Grade
>=80 A
less than 80 and >=65 B
less than 65 and >=50 C
less than 50 D
Public members
- A function ENTER( ) to allow user to enter values for ANo, Name, Agg and call function GradeMe( ) to find the Grade.
- A function RESULT( ) to allow user to view the content of all data members.
Аnswer:
class Applicant
{
long ANo;
char Name[40];
float Agg;
char Grade;
void GradeMe()
{
if(Agg>=80)
Grade='A';
else if(Agg<80 && Agg>=65)
Grade='B';
else if(Agg<65 && Agg>=50)
Grade='C';
else
Grade='D';
public:
void ENTER()
{
cout<<"Enter the values for Ano.Name.Agg"
cin>>ANo;
gets(Name);
cin>>Agg;
GradeMe();
}
void RESULT()
{
cout<<ANo<<Name<<Agg<<Grade;
}
};
Question 21:
Define a class ITEM in C++ with the following specification: Delhi 2010
Private members
- Code of type integer (Item Code)
- Iname of type string (Item Name)
- Price of type float(Price of each item)
- Qty of type integer(Quantity of item stock)
- Offer of type float(Offer percentage on the item)
- A member function GetOffer( ) to calculate offer percentage as follows:
If Qty <=50 Offer is 0
If 50<Qtv<=l 00 Offer is 5
If Qty >100 Offer is 10
Public members
- A function GetStock( ) to allow user to enter values for Code, Iname, Price, Qty and call function GetOffer( ) to calculate offer.
- A function ShowItem( ) to allow user to view the content of all data members.
Аnswer:
class ITEM
{
int Code;
char Iname[20]:
float Price;
int Qty;
float Offer;
void GetOffer()
{
if(Qty<=50)
Offer=0;
else if(Qty<=100)
Offer=5;
else
Offer=10;
}
public:
void GetStock()
{
cout<<"Enter the values for code, Item name, Price, Quantity";
cin>>Code;
gets(Iname);
cin>>Price>>Qty;
GetOffer();
}
void ShowItem()
{
cout<<Code<<Iname<<Price<<Qty<<Offer;
}
};
Question 22:
Define a class STOCK in C++ with the following specification: All India 2010
Private members
- ICode of type integer (Item Code)
- Item of type string (Item Name)
- Price of type float(Price of each item)
- Qty of type integer(Quantity in stock)
- Discount of type float(Discount percentage on the item)
- A member function FindDisc( ) to calculate discount percentage as follows:
If Qty <=50 Discount is 0
If 50<Qty<=100 Discount is 5
If Qty >100 Discount is 10 Public members
- A function Buy( ) to allow user to enter values for ICode, Item, Price, Qty and call function FindDisc( ) to calculate discount.
- A function ShowAll( ) to allow user to view the content of all data members.
Аnswer:
class STOCK
{
int ICode;
char Item[20]:
float Price:
int Qty;
float Discount:
void FindDisc():
{
if(Qty<=50)
Discount=0;
else if(Qty<=100)
Discount=5;
else
Discount=10;
}
public:
void Buy()
{
cout<<"Enter the values for Icode,Item,Price,Qty";
cin>>ICode;
gets(Item);
cin>>Price>>Qty;
FindDisc();
}
void ShowAll()
{
cout<<ICode<<Item<<Price<<Qty<<Discount;
}
};
Question 23:
Define a class RESORT in C++ with the following specification: Delhi 2009
Private members
- Rno – Data member to store room number
- Name – Data member to store customer name
- Charges – Data member to store per day charges
- Days – Data member to store number of days of stay
- COMPUTEO – Function to calculate and return amount as days*charges and if the value of days *charges is more than 11000, then as 1.02*Days *Charges
Public members
- Getinfo( ) Function tfo enter the content Rno, Name, Charges and Days
- Dispinfo( ) Function to display Rno, Name, Charges, Days and Amount (amount to be displayed by calling function COMPUTE( ))
Аnswer:
class RESORT
{
int Rno;
char Name[30];
float Charges;
int Days ;
float COMPUTE()
{
float temp=Days*Charges;
if(temp>11000)
return(1.02*temp);
return temp;
}
public:
void Getinfo()
{
cout<<"enter the room number:";
cin>>No;
cout<<"enter the customer name:";
gets(Name);
cout<<”enter the room charges per day";
cin>>Charges;
cout<<"enter number of days stayed by customer:";
cin>>Days:
}
void Dispinfo()
{
cout<<"Room number:"<<Rno;
cout<<"Customer Name:";
puts(Name) ;
cout<<"Charges per day:"<<Charges;
cout<<"Number of days stayed by customer:"<<Days;
cout<<"Total charges of customer: "<<COMPUTE();
}
};
Question 24:
Define a class HOTEL in C++ with the following specification: All IndiA 2009
Private members
- Rno Data member to store room number
- Name Data member to store customer name
- Tariff Data member to store per day charges
- NOD Data member to store number of days of stay
- CALC( ) Function to calculate and return amount as NOD*Tariff and if the value of NOD*Tariff is more than 10000, then as 1.05 NOD *charges
Public members
- Checkin( ) Function to enter the content Rno, Name, Tariff and NOD
- Checkout( ) Function to display Rno, Name, Tariff, NOD and Amount (amount to be displayed by calling function
CALC( ))
Аnswer:
class HOTEL
{
int Rno,NOD;
char Name[30];
float Tariff;
float CALC()
{
float temp=NOD*Tariff;
if(temp>10000)
return(1.05*temp);
return temp;
}
public:
void Check In()
{
cout«"Enter the room number:";
cin>>Rno;
cout<<"Enter the customer name:";
gets(Name);
cout<<"Enter the room charges per day";
cin>>Tariff ;
cout<<"Enter number of days stayed by customer:";
cin>>NOD;
}
void Checkout()
{
cout<<"Room number:"<<Rno;
cout<<"Customer Name:";
puts(Name);
cout<<"Charges per day:"<<Tariff;
cout<<"Number of days stayed by customer:"<<NOD;
cout<<"Total charges of customer:"<<CALC();
}
};
