Write a program that allows the user to enter students names followed by their t

ID: 3555516 • Letter: W

Question

Write a program that allows the user to enter students names followed by their test scores and outputs the following information(assume that the maximum nmber of students in the class is 50; if the number of students is less than 50, to indicate the end of input data, after entering the last students data, on a line by itself, hold the ctrl key/press z and then press the Enter key):

a) Class average

b) Names of all the students whose test scores are below the class average, with an appropriate message( youre below class average)

c) Highest test score and the names of all the students having the highest score.

Use methods.

Explanation / Answer

import java.util.Scanner;

// for double formatting

import java.text.DecimalFormat;

public class StudentScore

{

//---------------------------------------------------------

// Calculate student score and basic report

//---------------------------------------------------------

public static void main(String[] args)

{

// an array of double to store student's score

double [] studentscore = new double[50];

// an array of String object to store student name

String [] studentname = new String[50];

double studentavg = 0.0, sumscore = 0.0, averagescore = 0.0, highestscore =0.0;

// index

int i = 0, j = 0, k = 0, counter = 1;

Scanner readname = new Scanner(System.in);

Scanner readscore = new Scanner(System.in);

// prompt for inputs: Student name and score

System.out.println("Enter student name and score, 'Q' & 0 to stop: ");

// read and store student name and score for 1st input...

studentname[i] = readname.nextLine();

studentscore[i] = readscore.nextDouble();

// read and store next student name and score

{

i++;

counter++;

System.out.println("Enter student name and score, 'Q/q' & 0 to stop: ");

studentname[i] = readname.nextLine();

studentscore[i] = readscore.nextDouble();

// until the Q or q and 0 are entered...

} while(((studentname[i].compareTo("Q") != 0) || (studentname[i].compareTo("q") != 0)) && (studentscore[i] != 0));

// formatting the double output to two decimal places

DecimalFormat fmt = new DecimalFormat("0.##");

// some cosmetic formatting...
System.out.println("=================REPORT====================");

System.out.println("Student Name Score");

System.out.println("------------ -----");

// set initial value of the highest score to the 1st array element

// and then compare 1 by 1 in the for loop...

highestscore = studentscore[0];

for(k=0;k<=i-1;k++)

{

// print all the student names and their respective scores

System.out.println(studentname[k]+" "+fmt.format(studentscore[k]));

// summing up all the score for average calculation

sumscore = sumscore + studentscore[k];

// determining the highest score

if(highestscore < studentscore[k])

highestscore = studentscore[k];

}

// calculate class average score

System.out.println();

System.out.println("The number of student is " + (counter-1));

averagescore = sumscore / (counter-1);

System.out.print("The average score for this class is " + fmt.format(averagescore));

// some cosmetic formatting...

System.out.println();

System.out.println("================================================");

System.out.println("Below The Average Students! Work Harder! ");

System.out.println("================================================");

System.out.println("Student Name Score");

System.out.println("------------ -----");

// list down all the below average students

for(k=0;k<=i-1;k++)

{

if(studentscore[k] < averagescore)

System.out.println(studentname[k] + " " + fmt.format(studentscore[k]));

}
// some cosmetic formatting...

System.out.println("================================================");

System.out.println("Top Scorer Student! Congratulation!");

System.out.println("================================================");

System.out.println("Student Name Score");

System.out.println("------------ -----");

// list down all the highest mark students

for(k=0;k<=i-1;k++)

{

if(studentscore[k] == highestscore)

System.out.println(studentname[k] + " " + fmt.format(studentscore[k]));

}

An output samples:

Enter student name and score, 'Q' & 0 to stop:

Jodie Foster

79.50