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# [Question 2] ISC 2017 Computer Practical Paper Solved – Quiz Result

#### Question:

The result of a quiz competition is to be prepared as follows:

The quiz has five questions with four multiple choices (A, B, C, D), with each question carrying 1 mark for the correct answer. Design a program to accept the number of participants N such that N must be greater than 3 and less than 11. Create a double dimensional array of size (Nx5) to store the answers of each participant row-wise.

Calculate the marks for each participant by matching the correct answer stored in a single dimensional array of size 5. Display the scores for each participant and also the participant(s) having the highest score.

Example: If the value of N = 4, then the array would be: Note: Array entries are line fed (i.e. one entry per line)

Test your program with the sample data and some random data:

Example 1

INPUT : N = 5

Participant 1 D A B C C
Participant 2 A A D C B
Participant 3 B A C D B
Participant 4 D A D C B
Participant 5 B C A D D

Key: B C D A A

OUTPUT : Scores :

Participant 1 D A B C C
Participant 1 = 0
Participant 2 = 1
Participant 3 = 1
Participant 4 = 1
Participant 5 = 2

Highest score: Participant 5

Example 2

INPUT : N = 4

Participant 1 A C C B D
Participant 2 B C A A C
Participant 3 B C B A A
Participant 4 C C D D B

Key: A C D B B

OUTPUT : Scores :

Participant 1 = 3
Participant 2 = 1
Participant 3 = 1
Participant 4 = 3

Highest score:
Participant 1
Participant 4

Example 3

INPUT : N = 12

OUTPUT : INPUT SIZE OUT OF RANGE.

#### Programming Code:

```/**
* The class QuizResult_ISC2017 inputs the answers of each participant row-wise
* and calculates the marks for each participant
* @author : www.guideforschool.com
* @Program Type : BlueJ Program - Java
* @Question Year : ISC Practical 2017 Question 2
*/

import java.util.*;
class QuizResult_ISC2017
{
char A[][],K[];
int S[],n;

void input()
{
Scanner sc = new Scanner(System.in);
System.out.print("Enter number of participants : ");
n = sc.nextInt();
if(n<4 || n>10)
{
System.out.println("INPUT SIZE OUT OF RANGE");
System.exit(0);
}
A = new char[n]; // Array to store the answers of every participants
K = new char; // Array to store answer key
S = new int[n]; // Array to store score of every participant
System.out.println("\n* Enter answer of each participant row-wise in a single line *\n");
for(int i = 0; i

Output:
Enter number of participants : 4

* Enter answer of each participant row-wise in a single line *

Participant 1 : A C C B D
Participant 2 : B C A A C
Participant 3 : B C B A A
Participant 4 : C C D D B

Enter Answer Key : A C D B B

SCORES :
Participant 1 = 3
Participant 2 = 1
Participant 3 = 1
Participant 4 = 3

Highest Score : 3
Highest Scorers :
Participant 1
Participant 4

```

## Infix Postfix Prefix Conversion – Correct Method (ISC Computer Science)

In this video we discuss about the correct way of converting an Infix Expression to Postfix and Prefix.

1. • 2. 