SOLVED QUESTION PAPER COMPUTER SCIENCE(083)-2015
SOLVED QUESTION PAPER COMPUTER SCIENCE(083)-2015
SECTION A
Answers (programming in C++)
1
(a) name1 is a valid identifier.
(b) Header File’s Name
ctype.h //for isalpha()
stdio.h //for puts
(c) Error Finding.
#define Maxspeed 60.5
void main()
{
int MySpeed;
char Alert=’N’;
cin>>MySpeed;
if(MySpeed>Maxspeed)
Alert=’Y’;
cout<<Alert<<endl;
}
(d) Find Output.
#include<iostream.h>
void Location(int &X, int Y=4)
{
Y+=2;
X+=Y;
}
void main()
{
int PX=10,PY=2;
location(PY);
cout<<PX<<“,”<<PY<<endl;
location(PX,PY);
cout<<PX<<“,”<<PY<<endl;
}
Output: 10, 8
20, 8
(e) Find Output.
#include<iostream.h>
class Eval
{
char Level;
int Point;
public:
Eval()
{
level=’E’;
point=0;
}
void Sink(int L)
{
level-=L;
}
void Float(int L)
{
level+=L;
point++;
}
void Show()
{
cout<<Level<<“#”<<Point<<endl;
}
};
void main()
{
Eval E;
E.sink(3);
E.show();
E.float1(7);
E.show();
E.sink(2);
E.show();
}
Output: B#0
I#1
G#1
(f)
(ii) CDEFGH
CDEFGH
2
(b) #include<iostream.h>
#include<string.h> //FOR strcpy
class Passanger
{
long PNR;
char Name[20];
public:
Passanger() //FUNCTION 1
{
cout<<“Ready”<<endl;
}
void Book(long P, char N[]) //FUNCTION 2
{
PNR=P;
strcpy(Name, N);
}
void Print() //FUNCTION 3
{
cout<<PNR<<Name<<endl;
}
~Passanger() //FUNCTION 4
{
cout<<“Booking cancelled!”<<endl;
}
};
void main()
{
long A;
char B[20];
clrscr();
Passanger P;
{
P.Book(A,B); //Line 1
P.Print(); //Line 2
}
(ii) Function 4 will be executed at the end and it is referred as Destructor.
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