Question

Question-3: Example: Implement an algorithm that reads in a set of student grads in an exam. Use a negative input value as a flag to indicate that there is no more data to be read. If the grad are classified as follows 90-100 | Degrees 0-60 | 60-70 | 70-80 grade EF EDC Іс 80-90 в Determine and print out the percentage of the students who's failed, take D grade, take B grade and take A grade.

Answer 1

/*here we use java program to ffind the values plz follow the images also for understanding */
import java.util.*;
import java.lang.*;
import java.io.*;


class student

{
    int studentmark;
    String grade;
    
    void readgrade(int mak)
    {
      // Scanner sc=new Scanner(System.in);
        
     //  System.out.println("enter the mark of the student");
      // int mak=sc.nextInt();
         studentmark=mak;
         
    }
    String findgrade()
    {
        if(studentmark<60)
        grade="F";
        else if(studentmark<70)
        grade="D";
        else if(studentmark<80)
        grade="C";
        else if(studentmark<90)
        grade="B";
        else
        grade="A";
        
        return grade;
        
    }
}



class Main
{
    public static void main (String[] args) throws java.lang.Exception
    {
        
        student s1[]=new student[10];
       int flag=0;
        int A1=0,B1=0,C1=0,D1=0,f1=0;
        int total=0;
            Scanner sc1=new Scanner(System.in);
    do{
            s1[total]=new student();
           
             int mak=sc1.nextInt();
            s1[total].readgrade(mak);
             String xs=s1[total].findgrade();
             System.out.println(xs);
             if(xs=="A")
            { A1++;
             System.out.println(A1);}
             else if(xs=="B")
             B1++;
             else if(xs=="C")
             C1++;
             else if(xs=="D")
             D1++;
             else 
             f1++;
            
            total=total+1;

           System.out.println("Do want enter the  another stuent data 0 forno.. 1 foryes");
           flag=sc1.nextInt();
            
            
            
        }while(flag==1);
    
    double x1,x2,x3,x4,x5;
    System.out.println(total +" "+C1);
    System.out.println("percentage of student having grade A");
     x1=(double)A1/total;
     x1=x1*100;
     
    System.out.println(x1);
    
    
     System.out.println("percentage of student having grade B");
    x2=(double)B1/total;
     x2=x2*100;
     
    System.out.println(x2);
    
     System.out.println("percentage of student having grade c");
     x3=(double)C1/total;
     x3=x3*100;
     
    System.out.println(x3);
    
     System.out.println("percentage of student having grade D");
     x4=(double)D1/total;
     x4=x4*100;
     
    System.out.println(x4);
    
     System.out.println("percentage of student having grade fail");
     x5=(double)f1/total;
     x5=x5*100;
     
    System.out.println(x5);
        
        
    }
}

return grade; Class Main public static void main (String[] args) throws java.lang. Exception student s1[]=new student[10]; int flag=0; int Al=0,B1=0,C1=0,01=0,f1=0; int total=0; Scanner scl=new Scanner(System.in); do{ //do while loop for finding the function of the sl[total]=new student(); System.out.println("enter the mark of the student"); int mak=sci.nextInt(); sl[total].readgrade (mak); String xs=s1[total].findgrade(); System.out.println(xs); if(xs=="A") { A1++; System.out.println(Al); } else if(xs=="B") B1++; else if(xs=="C") C1++; else if(xs=="D") //grades finding here... D1++;

48 class Main 50 public static void main (String[] args) throws java.lang. Exception 58 do{ 60 64 student s1||=new student[10]; int flag=0; int Al=0,B1=0,01=0,01=0,f1=0; int total=0; Scanner scl=new Scanner(System.in); //do while loop for finding the function of the sl[total]=new student(); System.out.println("enter the mark of the student"); int mak=sci.nextInt(); sl[total].readgrade (mak); String xs=s1[total].findgrade(); System.out.println(xs); if(xs=="A") { A1++; System.out.println(Al);} else if(xs=="B") B1++; else if(xs=="C") C1++; else if(xs=="D") //grades finding here... D1++; else f1++; 165 66 68 total=total+1; LasWNLOLO CO JOWNPO System.out.println("Do want enter the another stuent data o forno.. 1 foryes"); flag=sci.nextInt(); }while(flag==1); double x1,x2,33,34,351 //calculating the percentage of differnt grades...... Cardamond a del

}while(flag==1); double x1,x2, x3, x4,5; //calculating the percentage of differnt grades...... System.out.println(total +" "+C1); System.out.println("percentage of student having grade A"); x1=( double) A1/total; xl=x1*100; System.out.println(x1); System.out.println("percentage of student having grade B"); x2=( double)B1/total; x2=x2*100; System.out.println(x2); System.out.println("percentage of student having grade c"); x3=( double)ci/total; x3=x3*100; System.out.println(x3); System.out.println("percentage of student having grade D"); x4=( double)D1/total; //casting of the integers to get double values... x4=x4*100: System.out.println(x4); System.out.println("percentage of student having grade fail"); x5= (double) f1/total; x)=x5*100; System.out.println(x5);

import java.util.*; import java.lang.*; import java.io.*; //here is the class for grade and marks of the student.. class student int studentmark; String grade; void readgrade(int mak) //funtion to read the marks of each student one by one // Scanner sc=new Scanner(System.in); // int mak=sc.nextInt(); studentmark=mak; String findgrade() //finding the grade of the students we can categorise the grades of the student if(studentmark<60) grade="F"; else if(studentmark<70) grade="D"; else if(studentmark<80) grade="C"; else if(studentmark<90) grade="B"; else grade="A"; //as specified by the question.... return grade;