CBSE Class 12 Computer Science Question Paper 2014 - Delhi

CBSE Class 12 Computer Science Question Paper 2014 - Delhi CBSE,CCE and NCERT students can refer to the attached file. All educational material on the website has been prepared by the best teachers having more than 20 years of teaching experience in various schools. The study material available on our website for all CBSE classes and subjects have been prepared by teachers from all over the country. All study material has been carefully designed keeping into mind the latest CBSE examination trends.  

COMPUTER SCIENCE

Time allowed : 3 hours l

Instrucdons : (i) All questions are compulsory.

(iil Programming Language : C++ I Maximum Marks : 70

1. (a) What is the difference between actual and formal parameter ? Give a suitable example to illustrate using a C++ code. 

(b) Observe the following C++ code and write the name(s) of the header fiIe(s)' which will be essentially required to run it in a C++ compiler :

void main ( )

{

char Text, [20] , C;

cin>>Text;

C=tol-ower (Text [0] ) ;

Cout<<C<<" ie the first char of " <<Text<<end1;

}

(c) Rewrite the following C++ code after removing all the syntax error(s;, if present in the code. Make sure that you underline eaih conection done by'you in the code.

Important Note :

- Assume that all the required header files are already included, which are essential to run this code.

- The corrections made by you do not change the logic ofthe program.

typedef char [50] STRING;

void main ( )

{

City STRING;

gets (City) ;

cout<<City [0] <<, \ t<<Cit.y [2] ;

cout< <Citsy< <endline ;

)

(d) obtain the output from the following c++ program as expected to appear on the screen after its execution.

Important Note :

- All the desired header files are already included in the code, which are required to run the code.

void main ( )

{

Char *Stri.n9=,,SARGAM,, ;

inr. *prr, Ail=i1,5,7,9j ;

Pt r=A;

cout < < * ptrsString< <end1 ;

String++;

Ptr+=3;

cout<< * Ptr< < String<<endI ,

i

(e) Obtain the output of the following C++ program, which will appear on the screen after its execution.

Important Note :

♦ All the desired header files are already included in the code, which are required to run the code.

Class Player

{

int Score, Lrevel ;

char Game;

public :

Player (char Gcame='A' )

{score=o; Level=1; Game=GGame; } void Start (int SC) ;

void Next O ; void Disp o

{

cout<<Game< < " @" < <Leve1< <end1,'

cout<<Score<<endI ;i);

void main ( )

{

Player P,Q ('B') ;

P.DispO;

Q. St.art (75) ;

g. uexr O ;

P. StarL (120) ,

e.DispO;

n.oispO;

)void Player::NexE o

}

)void Player: :Start (int SC)

{

Score+=SC;

rf (score >= 1o o )

Level=3;

else if (Score>=50 )

Level=2;

el se

Level=1;

 ) (0 Read the following C++ code carefully and find out, which out of the givenoptions (i) to (iv) are the expected correct output(s) of it. Also, write the madmum and minimum value that can be assigned to the variable Start used in the code : void main o

{

int cuess t4)={200,150,20 ,250!;

int Start=random (2 ) +2;

f or ( int C=Start ,'C<4 ,'C++ )

cout<<Guegs lcl <<" #'t t

)(i) 200#1s0# (ii) 1s0#20#

(iii) 1s0#20#2s0# (iv) 20#2s0#

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