CBSE Class 12 Computer Science Sample Paper 2014 Set 08

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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