ISC (Commerce) कक्षा १२ - CISCE Important Questions for Computer Science (Theory)

A super class EmpSal has been defined to store the details of an employee. Defie a subclass (overtime to compute the total salary of the employee, after adding the overtime amount based on the following criteria.

• If hours are more than 40, then 5000 are added to salary as an overtime amount
• If hours are between 30 and 40 (both inclusive), then 3000 are added to salary as an overtime amount
• If hours are less than 30, then the salary remains unchanged The details of the members of both the classes are given below:

Assume that the super class EmpSal has been defined. Using the concept of inheritance, specify the class Overtime giving the details of the constructer (...), void calSal() and void show().

The super class, main function and algorithm need NOT be written.

The keyword used by a class to acquire the properties of an interface is:

State the principle by which the stack data structure works.

Convert the following infix notation to postfix notation:

A * (B + C / D ) – E / F 

Answer the following question on the diagram of a Binary Tree given below:

State the degree of the nodes C and G. Also, state the level of these nodes when the root is at level 0.

Answer the following question on the diagram of a Binary Tree given below:

Write the pre-order and post-order traversal of the above tree structure.

A Queue is a linear data structure in which the operations are performed based on FIFO (First In First Out).

Define a class Queue with the following details:

Specify the class Queue giving the details of void add_dat(int) and int pop_dat( ). Assume that the other functions have been defined.

The main( ) function and algorithm need NOT be written.

Convert the following infix notation to postfix form.

(P + Q * R - S)/T * U

CardGame is a game of mental skill, built on the simple premise of adding and removing the cards from the top of the card pile.

The details of the class CardGame are given below.

1. Specify the class CardGame giving details of the functions void addCard(int) and int drawCard( ). Assume that the other functions have been defined.
   The main() function and algorithm need NOT be written.
2. Name the entity described above and state its principle.

Answer the following questions based on the diagram of a Binary Tree given below:

1. Name the external nodes of the tree.
2. State the degree of node M and node L.
3. Write the post-order traversal of the above tree structure.

Convert the following infix notation to prefix form.

( A – B ) / C * ( D + E )

Recycle is an entity which can hold at the most 100 integers. The chain enables the user to add and remove integers from both the ends i.e. front and rear.

Define a class ReCycle with the following details:

1. Specify the class ReCycle giving details of the functions void pushfront(int) and int poprear( ). Assume that the other functions have been defined.
   The main( ) function and algorithm need NOT be written.
2. Name the entity described above and state its principle.

A linked list is formed from the objects of the class Node. The class structure of the Node is given below:

class Node
{
      int n;
      Node link;
}

Write an Algorithm OR a Method to search for a number from an existing linked list. The method declaration is as follows:

void FindNode( Node str, int b)

Answer the following questions from the diagram of a Binary Tree given below:

1. Name the root of the left sub tree and its siblings.
2. State the size and depth of the right sub tree.
3. Write the in-order traversal of the above tree structure.

With the help of an example, briefly explain the dominant term in complexity.

For Big O notation, state the difference between O(n) and O(n² ).