Question

loop Write a program to read a list of exam scores given as integer percentages in the range 0 to 100. Display the total number of grades and the number of grades in each letter-grade category as follows: 90 to 100 is a A, 80 to 89 is a B, 70 to 79 is a C, 60 to 69 is a D, and 0 to 59 is an F. Use a negative score as a sentinel value to indicate the end of the input. (The negative value is used only to end the loop, so do not use it in the calculations.) For example, if the input is 98 87 86 85 85 78 73 72 72 72 70 66 63 50 -1 the output would be Total number of grades = 14 Number of A's = 1 Number of B's = 4 Number of C's = 6 Number of D's = 2 Number of F's = 1 loop

Answer 1

Answer:

import java.util.Scanner;

public class Program

{

public static void main(String [] Args)

{

int A_grades = 0;

int B_grades = 0;

int C_grades = 0;

int D_grades = 0;

int F_grades = 0;

int count=0;

int max = 0;

int min = 9999999;

int num;

int total = 0;

int smallest = 0;

int largest = 0;

Scanner in = new Scanner(System.in);

System.out.println("Enter exam score as integer percentage in range 0 to 100");

System.out.println("And enter a negative score at the end of the list :");

int score = in.nextInt();

while(score>0)

{

count++;

if(score < 0){ // negative number

break;} // exit the infine loop

else if(score > max){ // find bigger one

max = score;}

else if(score < min) { // find smallest one

min = score;}

total = total + score; // the total for average

if(score <= 50 && score>0)

smallest = score;

if(score > 90 && score <=100)

largest = score;

if(score>=90 && score<=100)

A_grades++;

else if(score>=80 && score<=89)

B_grades++;

else if(score>=70 && score<=79)

C_grades++;

else if(score>=60 && score<=69)

D_grades++;

else if(score>=0 && score<=59)

F_grades++;

score = in.nextInt();

} //end while

System.out.println("Total number of scores is : " + count );

System.out.println("Total Number of each Letter grade : " + count);

System.out.println("Percentage of total for each letter grade : ");

System.out.println("Total number of A grades :"+ A_grades);

System.out.println("Total number of B grades :"+ B_grades);

System.out.println("Total number of C grades :"+ C_grades);

System.out.println("Total number of D grades :"+ D_grades);

System.out.println("Total number of F grades :"+ F_grades);

System.out.println("Lowest Score is :"+smallest);

System.out.println("Highest Score is :"+largest);

System.out.println("Average score : "+ (total / count));

}

}

Explanation:

The Java program is such that functions in this manner, It reads a list of exam scores given as integer percentages in the range 0 to 100. Displays the total number of grades and the number of grades in each letter-grade category as follows: 90 to 100 is a A, 80 to 89 is a B, 70 to 79 is a C, 60 to 69 is a D, and 0 to 59 is an F.

See attachment for program output.