(English Medium) ICSE Class 10 - CISCE Question Bank Solutions for Computer Applications

Consider the following program segment and answer the questions given below:

int x[][]={{2,4,5,6}, {5,7,8,1}, {34,2,10,9}};

1. What is the position of 34?
2. What is the result of x[2][3] + x[1][2]?

Define a class to accept values into a 4 × 4 array and find and display the sum of each row.

Example:

A[][]={1,2,3,4),{5,6,7,8},{1,3,5,7},{2,5,3,1}}

Output:

sum of row 1=10 (1+2+3+4)

sum of row 2=26 (5+6+7+8)

sum of row 3=16 (1+3+5+7)

sum of row 4=11 (2+5+3+1)

What are the two ways of invoking functions?

Differentiate between formal parameter and actual parameter. 

How are private members of a class different from public members?

Write a menu-driven program to display the pattern as per the user’s choice. 

For an incorrect option, an appropriate error message should be displayed.

int x = (int) 32.8; is an example of ______ typecasting.

Method which is a part of a class rather than an instance of the class is termed as ______.

Invoking a method by passing the objects of a class is termed as ______.

Assertion (A): Static method can access static and instance variables.

Reason (R): Static variables can be accessed only by static method.

Identify the literal given below:

0.5

What are the values stored in variables r₁ and r₂:

(i) double r₁=Math.abs(Math.min(-2.83,-5.83));
(ii) double r₂=Math.sqrt(Math.floor(16.3)); 

Define a class named ParkingLot with the following description :
Instance variables/data members:
int vno — To store the vehicle number
int hours — To store the number of hours the vehicle is parked in the parking lot
double bill — Tb store the bill amount

Member methods:
void input( ) — To input and store the vno and hours.
void calculate( ) — To compute the parking charge at the rate of Rs.3 for the first hours or part thereof, and Rs. 1.50 for each additional hour or part thereof.
void display ( ) — To display the detail
Write a main method to create an object of the class and call the above methods.

Design n class to overload a function SumSeriesO as follows: 

(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 following series:
s = 1 + (1 x 2) + (1 x 2 x 3) + ….. + (1 x 2 x 3 x 4 x 20)

Identify the statement given below as assignment, increment, method invocation or object creation statement.

System.out.println(“Java”); 

Design a class with the following specifications:

Member methods:

void print() Display student name, age, mks and stream allocated.

Call all the above methods in main method using an object.

Define a class to overload the function print as follows:

Define a class to overload the method display() as follows:

void display(): To print the following format using nested loop.

1 2 1 2 1

1 2 1 2 1

1 2 1 2 1

void display (int n, int m): To print the quotient of the division of m and n if m is greater than n otherwise print the sum of twice n and thrice m. double display (double a, double b, double c) - to print the value of z where

z = p × q

`p=(a+b)/c`    q = a + b + c

Method which reverses a given number is ______: