자바 성적 프로그램

네이버 지식인에 있는 글입니다.
출처 : 네이버 지식인

package Education;
import java.util.Scanner;

 class Student { public static void main(String[] args)
 {
   Yeon[] s = new Yeon[10];
   int st_num;
   String name, flag;
   int attend, assignment, quiz, mid, last;
   double total, j_total=0;
   char hakjum = ' ';
   int MAX_student = 10;
   int count = 0;
   double total_max=0, total_min=0, ave;

   Scanner scan = new Scanner(System.in);

   do {
    System.out.print("성적을 줄 학생이 있으면 y로 없으면 n을 입력하세요. ");
    flag = scan.next();
    if(flag.equals("n"))
     break;

    System.out.print("학생의 번호를 입력하세요 : \t");
    st_num = scan.nextInt();
    System.out.print("학생의 이름을 입력하세요 : \t");
    name = scan.next();
    System.out.print("출석 점수를 입력하세요 : \t");
    attend = scan.nextInt();
    System.out.print("과제 점수를 입력하세요 : \t");
    assignment = scan.nextInt();
    System.out.print("퀴즈 점수를 입력하세요 : \t");
    quiz = scan.nextInt();
    System.out.print("중간시험 점수를 입력하세요 : \t");
    mid = scan.nextInt();
    System.out.print("기말시험 점수를 입력하세요 : \t");
    last = scan.nextInt();
   
    Yeon sj = new Yeon(st_num, name, attend, assignment, quiz, mid, last);
    s[count] = sj;

    total = (attend*0.1 + assignment*0.4 + quiz*0.1 + mid*0.2 + last*0.2);

    j_total += s[count].getTotal();
 
    System.out.println("총점 : " + s[count].getTotal());
    System.out.println("학점 : " + s[count].getHakjum(s[count].getTotal()));

    count++;
   } while (count <= MAX_student);

   System.out.println("성적 평가표");
   for(int i=0; i<count; i++)
   {
    System.out.print(s[i].getNum() + "\t");
    System.out.print(s[i].getName() + "\t");
    System.out.print(s[i].getTotal() + "\t");
    System.out.println(s[i].getHakjum(i) + "\t");
   }

   ave = j_total/count;
   total_max = s[0].getTotal();
   for(int i=0; i<count-1; i++)
   {
    if( s[i].getTotal() < s[i+1].getTotal() )
     total_max = s[i+1].getTotal();
    else
     total_max = s[i].getTotal();
   }
   total_min = s[0].getTotal();
   for(int i=0; i<count-1; i++)
   {
    if(s[i].getTotal() < s[i+1].getTotal())
     total_min = s[i].getTotal();
    else
     total_min = s[i+1].getTotal();
   }
   System.out.println("평균 점수 : \t" + ave);
   System.out.println("최고 점수 : \t" + total_max);
   System.out.println("최저 점수 : \t" + total_min);
  } // main

 }

  class Yeon
  {
   int st_num;
   String name, flag;
   int attend, assignment, quiz, mid, last;
   double total, j_total;
   char hakjum = ' ';
   int MAX_student = 10;
   int count = 0;
   double total_max, total_min, ave;
 
  public Yeon(int st_num, String name, int attend, int assignment, int quiz, int mid, int last)
  {
   this.st_num = st_num;
   this.name = name;
   this.attend = attend;
   this.assignment = assignment;
   this.quiz = quiz;
   this.mid = mid;
   this.last = last;
  }
   public int getNum()
  {
   return st_num;
  }
  public String getName()
  {
   return name;
  }
  public int getAttend()
  {
   return attend;
  }
  public int getAssignment()
  {
   return assignment;
  }
  public int getQuiz()
  {
   return quiz;
  }
  public int getMid()
  {
   return mid;
  }
  public int getFinal()
  {
   return last;
  }
  public double getTotal()
  {
   total = (attend*0.1 + assignment*0.4 + quiz*0.1 + mid*0.2 + last*0.2);
   return total;
  }
  public char getHakjum(double total)
  {
   if (total >= 90)
    hakjum = 'A';
   else if(total >= 80)
    hakjum = 'B';
   else if(total >= 70)
    hakjum = 'C';
   else if(total >= 60)
    hakjum = 'D';
   else if(total <= 59)
    hakjum = 'F';

   return hakjum;
  }

}