CBSE Class 12 Computer Science Sample Paper 2014 Set H

1.(a) Write the major differences between Object Oriented Programming and Procedural Programming. 

(b) Name the header file, to which following built-in function belong:

   (1) puts

   (2) toupper

   (3) isdigit

   (4) atoi (2)

( C) Write the output of the follwoing program segment

char *NAME="CoMpuTeR";

for(int x=0;x<strlen(NAME);x++)

if(islower(NAME[x]))

NAME[x]=toupper(NAME[x]);

else

if(isupper(NAME[x]))

if(x%2==0)

NAME[x]=tolower(NAME[x]));

else

NAME[X]=NAME[x-1];

puts(NAME); (2)

(d) Write a C++ function SUMFUN( ) having two parameters Y of (type double) and m(of type integer) with a result type as double to find the sum of the series given below: 

2. (a) Define a class TEST with the following specification:

Private members

Testcode of type integer

Description of type string

NoCandidate of type integer

A member function CALCNTR( ) to calculate and return the number of centers as  ( NoCandidate / 100 + 1)

Public members

A constructor function to initialize Testcode as 12.

A function IN_DATA( ) to accept values for Testcode, Description, NoCandidate

And call function CALCNTR( )

A function OUT_DATA( ) to display all the data members 

(b)Define a class REPORT with the following specification.

Private:

Adno 4 digit admission number

Name 20 characters

Marks an array of floating point values

Averge average marks obtained

Getavg() to compute the average obtained in five subjects

Public:

Readinfo() funtion to accept values for adno,name,marks and

Invoke the function getavg()

Displayinfo() function to display all data members on the screen. 

(b) Consider the following C++ declaration and answer the questions given below:

class A

{

void any();

protected:

int a,b;

void proc();

public:

A( );

void get( );

void put( );

};

class B:protected A

{

int c,d;

protected: 

int e,f;

void get2( );

public:

B( );

void put2( );

};

class C: private B

{

int p;

protected:

int q;

void get3( );

public:

void show3( );

};

(a) Name all the member functions which are accessible by the objects of class C.

(b) Name all the protected members of class B

(c) Name all the data members which are accessible from member functions of class C

(d) How many bytes does as object belonging to class C require?

(e) Which class constructor will be called first at the time of declaration of an object of class C

(f) Is the member function proc() which can be accessed form the objects of class C

(g) Name the base class and derived class of class B

(h) Name all the protected members of class C (2)

(c) Given the following C++ code, answer the questions

Class TEST

{

int time;

public:

TEST( ) //Function 1

{

time=0;

cout<<”hai”;

}

~ TEST( ) //Function 2

{

cout<<”hello”;

}

void exam( ) //Function 3

{

cout<<”god bless u”;

}

TEST(int Duration) //Function 4

{

time=Duration;

cout<<”Exam starts”;

}

TEST(TEST &T) //Function 5

{

time = T.Duration;

cout<<”Exam Finished”

}

};

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