Uttarakhand Board Class 12 Question Paper 2022 for Computer Science

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No. of printed pages : 4
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L44 444 (tPL)
2022
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CoMPUTER SCIENCE (THEORY)
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Time : 3 Hours I [Max. Marks :70
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Note : (i) All questions are compulsory.
(ii) Programming language : C++
(iii) Marks allotted to the questions are indicated against them.
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What are local and global variables?
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What is the difference between constructor and normal function?
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Briefly explain Destructor.
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How many times the following program will print "Hello"?
# include < iostream.h>
{
while (1)
{
cout << "Hello";
)
)

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Name the header files that shall be needed for the following code -
{
char word [ ]= "Board Exam";
cout<< setw (20) << word;
)
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What would be contents of following after array initialization -
int A [5] = {3, 8, 9}
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Explain Member function and scope resolution operator.
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What are basic file operations on text file?
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Define a class named Tour in C++ with following description :
Private members :
tcod e integer (Ranges 6- 10)
adults, child ren, distance integer
total_fare float
Assig n_fare ( ) A function which calculates fare and
assign value to data member total-fare
total-fare calculated as follows I

- For adults
For every adult a fixed Rs' 100 is charged as fare.
- for children
For every child a fixed Rs'50 is charged as fare.
Public members :
x A constructor which initialized all data members with 0.
x Function Enter-Tour ( ) to input the values of the data members
tcode, adults, children and call to Assign fare function.
x Function show-tour ( ) to print all details of object of Travel type'
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What do you understand by object oriented programming?
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What is friend function? Explain with an example.
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consider the following declarations and answer the questions given below:
class vehicle
t
int wheels;
Protected:
int passenger;
Public:
void inPut-data (int, int);
void output-data O;);
class heavy-vehicle : protected vehicle
{
int diesel-Petrol;
protected :
int load;
public:
void read-data (int, int);
void write-data O;);
class bus: Private heavY-vehicle
{char marks [20];
public:
void fetch-data (char);
void disPlaY-data O;);
(i) Name the base class and derived class of the class heavy-vehicle'
(ii) Name the data members that can be accessed from function display-data0
(iii) Name the data members that can be accessed by an object of bus class.
(iv) Is the member function output_datao accessible to the objects of heavy-
vehicle class.
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write an algorithm to convert infix expression to postfix expression using
stack.
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For a given array A tlOl t20l is stored in the memory along the row with
each of its elements occupying 4 bytes' Calculate address of A [3] [5], if
the base address of arraY A is 5000.
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What are the operations that can be performed on Queue? Explain.
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Write an algorithm for bubble Sort.
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What is SQL? Write its ch a ra cteristics.
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With reference to database define following :
(i) Field (ii) Record (iii) Database (iv) Primary Key
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Prove that :
xy +yz+yz' =y
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State and verify Duality principle and Absorption law in boolean algebra.
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If F (a, b, c, d)=E(0, 2,4,5,7,8, 70, 12, L3, tS)
Obtain the Simplified form using K-map.
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What is the diFFerence between WAN and LAN?
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Write two applications of Cyber Law.
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Write names of any four Transmission media.
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Define:
(i) E-Mail (ii) sMS
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Expand the following terms:
(i) MoDEM (ii) cDMA
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444QPL) 141

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