[백준 Java] 9498: 시험 성적

1. 문제

2. 맞춘코드

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
import java.util.StringTokenizer;

public class bj9498{
	public static void main(String[] args) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		StringTokenizer st = new StringTokenizer(br.readLine()," ");

		int num; 
		String result;

		num = Integer.parseInt(st.nextToken());

		if(num>89) result = "A";
		else if(num>79) result = "B";
		else if(num>69) result = "C";
		else if(num>59) result = "D";
		else result = "F";

		System.out.println(result);
	}
}