백준 - 9498

https://www.acmicpc.net/problem/9498

9498번: 시험 성적

import java.util.Scanner;
public class Main {

    public static void main(String[] args) {

        Scanner in = new Scanner(System.in);

        int A = in.nextInt();

        if(A >= 90){
            System.out.println("A");
        }
        else if(A >= 80){
            System.out.println("B");
        }
        else if(A >= 70){
            System.out.println("C");
        }
        else if(A >= 60){
            System.out.println("D");
        }
        else{
            System.out.println("F");
        }

        in.close();
    }
}