CBSE Class 12 Computer Science Question Paper 2014 - Outside Delhi

CBSE Class 12 Computer Science Question Paper 2014 - Outside 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 Maximum Marks : 70

Instructions :

(i) All questions are compulsory.

(ii) Programming Language : C++

1. (a) What is the difference between call by reference and call by value with respect to memory allocation ? Give a suitable example to illustrate using C++ code.

    (b) Observe the following C++ code and write the name(s) of the header file(s), which will be essentially required to run it in a C++ compiler : 1

void main()

{

char CH,STR[20];

cin>>STR;

CH=toupper(STR[0]);

cout<<STR<<starts with<<CH<<endl;

}

(c) Rewrite the following C++ code after removing all the syntax error(s), if present in the code. Make sure that you underline each correction done by you in the code. 2

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 of the program.

typedef char[80] STR;

void main()

{

Txt STR;

gets(Txt);

cout<<Txt[0]<<’\t<<Txt[2];

cout<<Txt<<endline;

}

(d) Obtain the output from the following C++ program as expected to appear on the screen after its execution. 2

Important Note :

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

void main()

{

char *Text=AJANTA;

int *P, Num[]={1,5,7,9};

P=Num;

cout<<*P<<Text<<endl;

Text++;

P++;

cout<<*P<<Text<<endl;

}

(e) Obtain the output of the following C++ program, which will appear on the screen after its execution. 3

Important Note :

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

class Game

{

int Level, Score;

char Type;

public:

Game(char GType=’P’)

{Level=1;Score=0;Type=GType;}

void Play(int GS);

void Change();

void Show()

{

cout<<Type<<”@”<<Level<<endl;

cout<<Score<<endl;

}

};

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