(English Medium) ICSE Class 10 - CISCE Important Questions for Computer Applications

Write a difference between unary and binary operator.

What are the various types of errors in Java?

Name the operators listed below are
(i) <
(ii) + +
(iii) &&
(iv) ? :

Write one difference between / and % operator.

Write a Java expression for the following :
ax⁵ + bx³ + c 

State the difference between == operator and equals () method. 

Using switch statement, write a menu-driven program for the following : 

(i) To find and display the sum of the series given below :
S = x¹ -x² + x² – x⁴ + x⁵ – x²⁰ 
(where x = 2)
(ii) To display the following series :
1 11 111 1111 11111
For an incorrect option, an appropriate error message should be displayed.

Write down java expression for:

`"T" = sqrt("A"^2 + "B"^2 + "C"^2)`

Rewrite the following using ternary operator:

if (x%2 == o)
System.out.print(“EVEN”);
else
System.out.print(“ODD”);

Write a Java expression for the following :

`sqrt(3"x"+"x"^2)/"a+b"`

Rewrite the following using ternary operator : 

if (bill > 10000)
discount = bill * 10.0 / 100;
else
discount = bill * 5.0 / 100;

Write a program in Java to accept a string in lower case and change the first letter of every word to upper case. Display the new string. 

Sample input: we are in a cyber world

Sample output: We Are In Cyber World

Write a program to input and store roll numbers, names and marks in 3 subjects of n number students in five single dimensional array and display the remark based on average marks as given below : (The maximum marks in the subject are 100).
Average marks = `"Total marks"/3`

Name the primitive data type in Java that is:
A 64-bit integer and is used when you need a range of values wider than those provided by int.

Name the primitive data type in Java that is :

A single 16-bit Unicode character whose default value is ‘\u0000’.

Operators with higher precedence are evaluated before operators with relatively lower precedence. Arrange the operators given below in order of higher precedence to lower precedence.

1. && 
2. % 
3. >= 
4. ++

A Identify the type of operator &&:

The code obtained after compilation is known as ______.

Write the Java expression for (a + b)^x.

Evaluate the expression when the value of x = 4;
x* = - - x + x + + + x