[Baekjoon]백준 NO.9498 - 시험 성적 / Java(자바)

//No.9498

import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		int A = sc.nextInt();
		
		if(A >= 90 && A <= 100) {
			System.out.println("A");
		}else if(A >= 80 && A < 90) {
			System.out.println("B");
		}else if(A >= 70 && A < 80) {
			System.out.println("C");
		}else if(A >= 60 && A < 70) {
			System.out.println("D");
		}else if(A >= 0 && A < 60){
			System.out.println("F");
		}else{
            System.out.println("시험점수는 0점부터 100점까지만 입력해주세요.");
        }
		sc.close();
	}
}