Question

AverageGrade. Assume the professor gives five exams during the semester with grades 0 through 100 and drops one of the exams with the lowest grade. Write a program to find the average of the remaining four grades. The program should use a class named Exams that has 1. An instance variable to hold a list of five grades, 2. A method that calculate and return average. 3. A string that return the “exams Average” for printing. Your program output should prompt for an input for each grade. Use any number between 0 and 100. Your submission should include compiled output.

use java

Answer 1

Code:

import java.util.*; 
import java.util.Scanner;
class Exams{ 
    public static int grades[]=new int[5];   //it is instance variable of class to holds grades 
    public static double avarage=0;
    public static double calavg(int[] g){  
        double sum=0;
        Arrays.sort(g);     //short the grades because we dont want to calculate avarage of lowest grade 
        for(int i = 1; i < 5; i++)  //so here lowest grade is present at 0th index in grade array so we start from 1 
        {
            sum+=g[i];    //it calculate sum of all grades excluding lowest grade
        }
        avarage=sum/4;    //calculate avarage of grades excluding lowest grade
        return avarage;
    }  
    public static String print()    //return string with avarage
    {
        return "Your avarage of grades excluding lowest grade is : "+avarage;
    }
    public static void main(String args[]){  
        
        Scanner s = new Scanner(System.in);
        System.out.print("Enter your 5 grades from 0 to 100 :\n");

        for(int i = 0; i < 5; i++)  //it will take 5 grades from user
        {
            grades[i] = s.nextInt();  //store 5 grades into array
        }
        calavg(grades);    //call function to calculate avarage of grades
        System.out.print(print());   //print avarage of grdes
    }
}

Output: