Karnataka SSLC Question Paper 2022 Answer Key Computer Science

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KARNATAKA SECONDARY EDUCATION EXAMINATION BOARD, MALLESHWARAM,
BANGALORE – 560 003
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S. S. L. C. EXAMINATION, MARCH/APRIL, 2022

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MODEL ANSWERS
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Date : 01. 04. 2022 ] CODE NO. : 74

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Subject : ELEMENTS OF COMPUTER SCIENCE
( À¤≈¤ @∫⁄¥¿£% & Æ⁄‚¥´⁄¡¤»⁄~%}⁄ À¤≈¤ @∫⁄¥¿£%/ Regular Fresh & Regular Repeater )

[ V⁄¬Œ⁄r @MO⁄V⁄◊⁄fl : 90
[ Max. Marks : 90

Qn. Sub.
Value Points Total
Nos. Qn.No.

1. i) FORTRAN is a

(A) high level language (B) low level language

(C) assembly language (D) machine language.

(A) high level language
1
ii) Two parts of a program can be connected by

(A) rhombus (B) capsule

(C) rectangle (D) circle.

(D) circle
1

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iii) An identifier whose value does not change throughout the

program is called a

(A) variable (B) constant

(C) reserve word (D) label.

(B) constant 1
iv) The size of char data type is

(A) 1 byte (B) 2 bytes

(C) 4 bytes (D) 8 bytes.

(A) 1 byte
1
v) The escape sequence character set for end of string is

(A) \n (B) \b

(C) \0 (D) \r

(C) \0
1
vi) The maximum length of a variable in C is

(A) 64 (B) 32

(C) 16 (D) 8.

(D) 8
1
vii) The formatted output function in a computer programming

is

(A) menu ( ) (B) printf ( )

(C) scanf ( ) (D) putchar ( )

(B) printf ( ) 1

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viii) Which symbol is used as a statement terminator in C ?

(A) ; (B) !

(C) # (D) ~

(A) ; 1

ix) An expression that outputs a numeric value is called an

(A) arithmetic expression (B) logical expression

(C) relational expression (D) algebraic expression.

(A) arithmetic expression 1

x) The equality operator is represented by

(A) = (B) :=

(C) == (D) . EQ .

(C) == 1

2. a) Define translator. 2

Translators are programs which convert high level

programs into equivalent machine level code. These

translators are essentially system software usually written

in assembly language. 2

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b) Write a short note on application software. 3
These are the softwares which enable us to do specific
tasks on the computer. These softwares consist of a set of
programs to carry out operations for specific applications.
Examples :
i) Auto CAD
ii) Tally
iii) Pay plus
iv) Computered billing systems
3
c) Explain the characteristics of flowchart. 5
— easy to understand
— they are concise and precise
— flowchart is language free
— flowchart makes the program easy
— flowchart provides convenient way of documentation.
5×1 5
3. a) List the different types of expressions. 2
i) Arithmetic expressions
ii) Relational expressions
iii) Logical expressions 2×1 2
b) Explain delimiters. 3
Delimiters are symbols used to separate items, but they do
not specify any operation or yield a result.
The delimiters used in C are
# - processor directive
, - variable delimiter in variable list

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; - statement delimiter
: - label delimiter
( ) - used in expressions
[ ] - used with arrays
{ } - used to block C statements
3
c) Mention the rules to name a variable. 5

i) Allowable characters are letters a - z & A - Z,

digits 0 - 0 and underscore ( _ )

ii) No other special character is allowed

iii) The first character must be a letter or an underscore

iv) Both upper case and lower case letter are allowed

v) Only the first six characters are significant in

standard C

vi) Reserved word cannot be used as variable name.

5×1 5

4. a) Write the conversion characters for various data types. 2

i) %d - Decimal
ii) %f - Floating point number
iii) %e - Floating point number with exponent
iv) %O - Octal number
v) %OX - Hexadecimal number
vi) %C - Single character

vii) %S - String 2×1
2

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b) Explain the various arithmetic operators. 3

These are the operators used to perform arithmetic

operations on numeric data. The five arithmetic operators

available in C are listed below :

Operator Operation

+ addition

– subtraction

* multiplication

/ division

% modulus division

3

c) Draw the symbols used in system flowchart. 5

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5×1
5
5. a) List the types of logical operators. 2
i) && logical AND
ii) || logical OR
iii) ! logical NOT 2×1 2
b) Write a C program to find largest of two numbers. 8
/* Program to find largest of 2 numbers */
# include <stdio.h>
main ( )
{
int, n, m, big ;
clrscr ( );
printf ("\n Enter two integer numbers :" );
scanf ("%d%d", &n, &m);
big = (n>m) ? n:m ;
printf ("\n the largest of %d and %d is : %d", n, m, big);
}
Enter two number : 10, 70
The largest of 10 and 70 is : 70
8
OR

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a) List the types of binary operators. 2
(i) Arithmetic, (ii) Relational, (iii) Logical,
(iv) Assignment, (v) Bitwise. 2×1 2

b) Write a C program to find circumference of a circle. 8
/* Program to find circumference of a circle */
#include <stdio.h>
main
{
/* Declaration and assignment */
float Pi = 3·14159 radius = 10, circum ;
circum = 2 * Pi * radius ;
printf ("\n circumference = %f ", circum) ;
return
8
}
6. a) What are constants ? 2
These are the items which directly represent values which
will not change during the execution of the program.
Constants fall into two broad categories. Numeric
constants and Character constants. 2
b) Write a C program to find whether a given number is even

or odd. 8

8

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7. a) Convert the following mathematical expressions into

equivalent C expressions : 2

b
i) a2 − + c2
2

2x 2 + 3x − 1
ii) .
10

i) a * a − b /2 + c * c

ii) ( 2 * x * x + 3 * x − 1 ) /10 2×1 2

b) Write a C program to find the highest marks of a student

in four exams. 8

8

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8. a) Identify the errors in the following statements, if any : 2

i) P = x +y ; 5

ii) x + y = Sum ;

i) The semicolon is to come in the end.

ii) It has to be sum = x + y ; 2×1
2

b) Write a C program to convert degree Fahrenheit to degree

Centigrade. 8

8

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9. a) What will be the value of the following expressions when

A = 3, B = 5 and C = 2 ? 2

i) S = ( A + B ) /C

ii) S = B * C /A .

i) S=4

ii) S = 10/3 = 3 ( integer division ) 2×1 2

b) Write a C program to evaluate the following expression : 8

Y 2 − XZ .
P =
2Y

8

OR

a) Differentiate between = = and = operator. 2
i) = = is an equality or relational number used for
comparison
ii) = is an assignment operator which assigns the
resultant value on its right hand side to the variable
on its left hand side. 2

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b) Write a C program to calculate simple interest. 8
/* Program to calculate simple interest */
#include <stdio.h>
main ( )
{
int year;
float prin, rate si ;
printf ("\n enter principal, rate and period: ")
scanf ("%f %f %d" & prin, & rate, & year );
SI = prin * rate * year/100; 8
printf ("\n simple interest = %f," SI)
return
}

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