[구름LEVEL] 시험성적 평균과 등급 구하기

문제

 

 

풀이

 

import java.io.*;
import java.util.*;
import java.text.DecimalFormat;

class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		double kor = sc.nextInt();
		double eng = sc.nextInt();
		double math = sc.nextInt();
		
		double avg = (kor+eng+math)/3.0;
		
		DecimalFormat df = new DecimalFormat("0.00");
		String str = df.format(avg);
		
		System.out.print(str+" ");
		
		if(avg >= 90) {
			System.out.print("A");
		} else if(avg >= 80) {
			System.out.print("B");
		} else if(avg >= 70) {
			System.out.print("C");
		} else if(avg >= 60) {
			System.out.print("D");
		} else {
			System.out.print("F");
		}
	}
}