Question

Develop an interactive program to assist a Philosophy professor in reporting students’ grades for his PHIL-224.N1 to the Office of Registrar at the end of the semester.

Display an introductory paragraph for the user then prompt the user to enter a student record (student ID number and five exam-scores – all on one line). The scores will be in the range of 0-100. The sentinel value of -1 will be used to mark the end of data.

The instructor has decided to drop the lowest of the five scores. Your program should compute and store in memory the student average and the corresponding letter grade (A = 90%, B = 80%, C = 70%, D = 60%, F = 0%) based on the best (top) four exam-scores. For each student display in a box, the ID number, average (based on five scores), new average (based on best four scores), letter-grade (based on best four scores), and the lowest score with appropriate labels. You can use characters such as “*” or “+” to form/decorate the four sides of the box.

At the end, display a nice summary report to include the following items with appropriate labels: (a) class average based on the five scores and (b) class average based on the best four scores, (c) Number of A’s, B’s, C’s, D’s, and F’s (based on the best four scores only), and (d) the total number of records processed.

Use the following data set as input. Remember that for each of the five exam-scores your program is to output two sets of average and letter-grade (one before dropping the lowest score and one after).

Input Data

Student ID #                       Exam 1                  Exam 2                  Exam 3                  Exam 4                  Exam 5

11111                                            90                           90                           80                           90                   90

22222                                            100                         88                           87                           93             90

33333                                            80                           80                           80                           80         72

44444                                            80                           0                              0                              60      70

55555                                            70                           68                           66                           64             62

66666                                            77                           77                           77                           66           77

-1

Notes:

1. See the next page for an example of input/output of the program.
2. Develop an algorithm for this problem using either flowcharting or the pseudo-code technique.
3. Documentation is necessary.
4. Turn in a copy of the source code (using File, Print options), the program output (screen shots or the copy/paste technique and the use of MS Word).
5. Run your program using the above data.
6. Please direct your questions to the instructor.
7. Please stop by his office during his office hours if you need any help.

An example of a portion of input and output of the program using two records may look something like the following:

.

.

.

Please enter student id and five scores all on one line <-1 to exit>.

11111 90 90 80 90 90

+++++++++++++++++++++++++++

+ Student ID:                    11111    +

+ Average:                         88.0        +

+ Lowest Score:                80.0        +

+ New Average:              90.0        +

+ Letter Grade:                A             +

+++++++++++++++++++++++++++

Please enter student id and five scores all on one line <-1 to exit>.

22222 100 88 87 93 90

+++++++++++++++++++++++++++

+ Student ID:                    11111    +

+ Average:                         91.6        +

+ Lowest Score:                87.0        +

+ New Average:              92.8        +

+ Letter Grade:                A             +

+++++++++++++++++++++++++++

.

.

.

Bonus Points Opportunities (earn up to 10 points):

• Calculate letter grades based on the plus-and-minus grading system mentioned in the course syllabus (number of A’s, number of A-‘s, number of B+’s etc.)
• Include the count of (number of) each of the available grades in the summary report.

Answer 1

ANSWER :

Please fine below the required code:

//LetterGrade.java

import java.util.Scanner;

public class LetterGrade {

//static variable for storing the count of grade

static int aCount,bCount,cCount,dCount,fCount;

public static void main(String[] args) {

String [] students = new String[100];

int count=0;

Scanner sc = new Scanner(System.in);

System.out.println("Enter the students when done enter -1 on new line");

String line="";

while(true)

{

line=getInput(sc);

if(line.equals("-1"))break;

students[count++]=line;

}

for(int i=0;i<count;i++)

{

String array[] = students[i].split(" ");

double sum=0;

int noOfExam=0;

for(int j=1;j<array.length;j++) {

noOfExam++;

sum+=Integer.valueOf(array[j]);

}

double avg = sum/(double)noOfExam;

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

System.out.println("*"+String.format("%1$-20s", "ID : "+array[0])+"*");

System.out.println("*"+String.format("%1$-20s", "Average : "+String.format("%.2f", avg))+"*");

System.out.println("*"+String.format("%1$-20s", "Grade : "+getGrade(avg))+"*");

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

System.out.println();

}

System.out.println("\nReport after dropping the minimum no \n");

//after dropping lowest

for(int i=0;i<count;i++)

{

String array[] = students[i].split(" ");

int min=Integer.MAX_VALUE;

double sum=0;

int noOfExam=0;

for(int j=1;j<array.length;j++)

{

if(Integer.valueOf(array[j])<min)

min=Integer.valueOf(array[j]);

sum+=Integer.valueOf(array[j]);

noOfExam++;

}

sum=sum-min;//dropped the min value

double avg = sum/(double)(noOfExam-1);

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

System.out.println("*"+String.format("%1$-20s", "ID : "+array[0])+"*");

System.out.println("*"+String.format("%1$-20s", "Average : "+String.format("%.2f", avg))+"*");

System.out.println("*"+String.format("%1$-20s", "Grade : "+getGrade(avg))+"*");

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

System.out.println();

}

//printing the summary

System.out.println("****************SUMMARY**********************\n");

System.out.println("No Of Record Processed : "+count);

System.out.println("No Of A Grade : "+aCount);

System.out.println("No Of B Grade : "+bCount);

System.out.println("No Of C Grade : "+cCount);

System.out.println("No Of D Grade : "+dCount);

System.out.println("No Of F Grade : "+fCount);

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

sc.close();

}

/*

* method for taking the input

*/

private static String getInput(Scanner sc)

{

String id ;String marks;

System.out.print("Enter the student id : ");

id= sc.nextLine();

if(id.equals("-1"))return "-1";

System.out.print("Enter the marks seprate by space : ");

marks= sc.nextLine();

return id+" "+marks;

}

private static char getGrade(double avg)

{

if(avg>=90) {

aCount++;

return 'A';

}

else if(avg<90 && avg >=80) {

bCount++;

return 'B';

}

else if(avg<80 && avg>=70) {

cCount++;

return 'C';

}

else if(avg<70 && avg>=60)

{

dCount++;

return 'D';

}

fCount++;

return 'F';

}

}

//OUTPUT