(Paper) Sample Paper Class - XII Computer Science 2008-3
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- #include<iostream.h>
int max(int &x,int &y,int &z)
{
if(x>y &&y>z)
{
y++;
z++;
return x;
}
else
if(y>x)
return y;
else
return z;
}
void main()
{
int a=10,b=13,c=8;
a=max(a,b,c);
cout<<a<<b<<c<<endl;
b=max(a,b,c);
cout<<++a<<++b<<++c<<endl;
}
- void main()
{
int a=32,*X=&a;
char ch=65,&cho=ch;
cho+=a;
*X+=ch;
cout<<a<<’,’<<ch<<endl;
}
- #include<iostream.h>
struct point
{
int x,y;
};
void show(point p)
{
cout<<p.x<<’;’<<p.y<<endl;
}
void main()
{
point U={0,10},V,W;
V=U;
V.x+=0;
W=V;
U.y+=10;
U.x+=5;
W.x-=5;
show(U);
show(V);
show(W);
}
- void main()
{
int x[]={10,20,30,40,50};
int *p,**q;
int *t;
p=x;
t=x+1;
q=&t;
cout<<*p<<”,”<<**q<<”,”<<*t++;
}
- class state
{
char *statename;
int size;
public:
state()
{
size=0;
statename=new char[size+1];
}
void display() { cout<<statename<<endl; }
state(char *s)
{
size=strlen(s);
statename=new char[size+1];
strcpy(statename,s);
}
void replace(state &a, state &b)
{ size=a.size+b.size;
delete statename;
statename=new char[size+1];
strcpy(statename,a.statename);
strcat(statename,b.statename);
}
};
void main()
{
char *temp=”Delhi”;
state state1(temp),state2(“mumbai”),state3(“Nagpur”),S1,S2;
S1.replace(state1,state2);
S2.replace(S1,state3);
S1.display();
S2.display();
}
- void main()
{
long NUM=1234543;
int f=0,s=0;
do{
int rem=NUM%10;
if(rem%2==0)
f+=rem;
else
s+=rem;
NUM/=10;
}while(NUM>0);
cout<<f-s;
}
Classes & constructor
- Answer the questions(i) and (ii) after going through the following class :
class Exam
{
int year;
public :
Exam(int y) { year=y; }
Exam(Exam &t);
}
(i) Create an object, such that it invokes constructor 1.
(ii) Write complete definition for constructor 2.
- Define a class named Housing in C++ with the following descriptions :
private members
reg_no integers (Ranges 10-1000)
name char array
type character
cost float
public members
· function Read_data() to read an object of housing type.
· function display() to display the details of an object.
· function draw_nos() to choose and display the details of 2 houses selected randomly from an array of 10 objects of type Housing. Use random function to generate the registration no with reg_no from the array.
- Define a class named Cricket in C++ with the following descriptions :
private members
Target_scope int
Overs_bowled int
Extra_time int
Penalty int
cal_panalty() a member function to calculate penalty as follows :
if Extra_time <=10 , penalty =1
if Extra_time >10 but <=20, penalty =2
otherwise, penalty =5
public members
a function extradata() to allow user to enter values for target_score,overs_bowled,extra_time.
a function dispdata() to follow user to view the contents of all data members.
- Define a class named Directory in C++ with the following descriptions :
private members
docunames string (documents name in directory)
freespace long (total number of bytes available in directory )
occupied long (total number of bytes available in directory)
public members
newdocuentry() a function to accept values of docunames,freespace & occupied from user
retfreespace() a function that return the value of total kilobytes available. (1 KB=1024 b)
showfiles() a function that displays the names of all the documents in directory.
- Define a class named Publisher in C++ with the following descriptions :
private members
Id long
title 40 char
author 40 char
price , stockqty double
stockvalue double
valcal() A function to find price*stockqty with double as return type Public members
· a constructor function to initialize price , stockqty and stockvalue as 0
· Enter() function to input the idnumber , title and author
· Takestock() function to increment stockqty by N(where N is passed as argument to this function) and call the function valcal() to update the stockvalue().
· sale() function to decrease the stockqty by N (where N is sale quantity passed to this function as argument) and also call the function valcal() to update the stockvalue
· outdata() function to display all the data members on the screen.
- Define a class named Serial in C++ with the following descriptions :
private members
serialcode int
title 20 char
duration float
noofepisodes integer
Public members
· a constructor function to initialize duration as 30 and noofepisodes as 10.
· Newserial() function to accept values for serialcode and title.
· otherentries() function to assign the values of duration and noofepisodes with the help of corresponding values passed as parameters to this function.
· dispdata() function to display all the data members on the screen.
- Considering the following specifications :
Structure name
data
type
size
Namefirst char array 40
mid char array 40
last char array 60
Phone area char array 4
exch char array 4
numb char array 6
Class name
Data
Type
P_rec name Name
phone Phone
Member functions:
· Define constructor (outside the class P_rec) that accepts the values of data members from the user.
· Define the display_rec (outside the class P_rec) that shows the current values .
Declare structures in C++ for Name and Phone . Declare the class P_rec.
- Define a class Competition in C++ with the following descriptions:
Data
Members
Event_no integer
Description char(30)
Score integer
Qualified char
Member
functions
A constructor to assign initial values Event_No number as 101,Description as “State level” Score is 50 , qualified ‘N’.
Input() To take the input for event_no,description and score.
Award(int) To award qualified as ‘Y’, if score is more than the cutoffscore passed as argument to the function else ‘N’.
Show() To display all the details.
9. Declare a class bank
to represent bank account of 10 customers with the following data members: name
of depositor, account number,
type of account(s for savings and c for current account), balance amount. The
class also contains the following member
functions:
(a)
To initialize data members.
(b)
To deposit money
(c)
To withdraw money after
checking minimum balance (say 1000)
(d)
To display the data members on screen.