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ICSE Paper – 2016
Class – X
Subject – Computer Applications
Class – X
Subject – Computer Applications
(Class:
X)
(Two Hours)
Answer to this paper must be written on the paper provided separately.
This paper is divided into two sections.
Attempt ALL questions from Section A and
any FOUR questions from Section B.
The intended marks for questions or parts of questions are given in
brackets [ ].
SECTION A (40 Marks)
Attempt ALL questions.
Question 1. [2x5=10]
a) Define
Encapsulation.
b) What are keywords? Give an
example.
c) Name any two
library packages.
d) Name the type of error (syntax, logical
or runtime error) in each case given below:
i) Math.sqrt(36-45) ii) int a;b;c;
e) If int x[]={4,3,7,8,9,10}; what are the
values of p and q ?
i) p =
x.length ii) q = x[2]+x[5]*x[1]
Question 2. [2x5=10]
a) State the difference between ==
operator and equals() method.
b) What are the
types of casting shown by the following examples:
i) char c =
(char) 120 ii) int x = ‘t’;
c) Differentiate
between formal and actual parameter.
d) Write a
function prototype of following.
A function PosChar which takes a string argument
and a character argument and returns an integer value.
e) Name any two
types of access specifiers.
Question 3. [2x10=20]
a) Give the output
of following string functions.
i) “MISSISSIPPI”.indexOf(‘S’)
+“MISSISSIPPI”.lastIndexOf(‘I’)
ii) “CABLE”.compareTo(“CADET”);
b) Give the output of following Math
functions
i) Math.ceil(4.2)
ii)
Math.abs(-4)
c) What is a parameterized constructor?
d) Write down Java expression for T
= A2+B2+C2
e) Rewrite the following using ternary operator:
if(x%2==0)
System.out.print(“EVEN”);
else
System.out.print(“ODD”);
f) Convert the following while loop to the
corresponding for loop:
int
m = 5, n = 10;
while
(n>=1)
{
System.out.println(m*n);
n--;
}
g) Write one
difference between primitive and composite data types.
h) Analyze the given program segment
and answer the following questions:
i)
Write output of the program
ii)
How many times does the body of the loop gets
executed.
for(int m = 5;m<=20;m+=5)
{ if (m%3 == 0)
break;
else
if (m%5 == 0)
System.out.println(m);
continue;
}
i) Give the output of following
expression:
a += a++ + ++a +
--a + a--; when a=7
j) Write the return type of
following library functions:
i)
isLetterOrDigit(char)
ii)
replace(char, char)
SECTION B (60 Marks )
Attempt any four questions from this Section.
The answers in this section should consist of the program in
Blue J environment with Java as the base. Each program should be written
using Variable descriptions / Mnemonics Codes such that the
logic of the program is clearly depicted.
Flow-charts and Algorithms are not required.
Q4. Define a class called BookFair with
the following description: [15]
Instance variables/data members:
String Bname - stores the book
name
double price - stores price of the book.
Member Methods:
BookFair() -
default constructor to initialize data
members.
void input() -
to input and store the name and price of the book.
void calculate() -
to calculate price of the book after discount. Discount is calculated based on
following criteria.
|
Price
|
Discount
|
|
Less than or equal to Rs1000
|
2% of price
|
|
More than Rs1000 and less than or equal
to Rs3000
|
10% of price
|
|
More than Rs3000
|
15% of price
|
void
display() -To display the name and
price of the book after discount. Write a main method to create an object of
the class and call the above member methods.
Q5. Using switch statement write a menu
driven program for the following. [15]
|
a)
Print Floyd’s triangle
|
b) Display following pattern
|
|
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
|
I
I C
I C S
I C S E
|
For an incorrect option, an appropriate
error message should be displayed.
Q6. Special words are those words which
starts and ends with the same letter [15] Example: EXISTENCE,
COMIC, WINDOW
Palindrome words are those words which
read the same from left to right and vice versa.
Example: MALAYALAM, MADAM, LEVEL, ROTATOR,
CIVIC
All palindromes are special words but all
special words are not palindromes.
Write a program to accept a word check and
print whether the word is a palindrome or only a special word.
Q7. Design a class to overload a function SumSeries()
as follows: [15]
(i) void SumSeries (int n, double x) with one
integer argument and one double argument to find and display the sum of the
series given below:
s = x/1 – x/2 + x/3 – x/4 + x/5 ……. To n terms.
(ii) void SumSeries() To find and display
the sum of the series given beow:
S = 1 + (1X2) + (1X2X3) + ……… +
(1X2X3X4……X20)
Q8. Write a program to accept a number and
check and display whether it is a Niven
number or not. [15]
(Niven number is that number which is divisible by its sum of digits)
Example:
Consider number 126. Sum of digits is
1+2+6=9 and 126 is divisible by 9
Q9. Write a program to initialize the Seven
Wonders of the World along with their locations in two different arrays. Search
for a name of the country input by the user. If found, display the name of the
country along with its wonder, otherwise display “Sorry Not Found!”
Seven Wonders – CHICHEN ITZA, CHRIST THE REDEEMER,
TAJMAHAL, GREAT WALL OF CHINA, MACHU PICCHU, PETRA, COLOSSEUM
Locations – MEXICO, BRAZIL, INDIA, CHINA, PERU,
JORDAN, ITALY
Example: Country Name: INDIA Output: INDIA - TAJMAHAL
Country Name: USA Output:
Sorry Not Found!
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