package codeup100; import java.util.Scanner; public class c1068 { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int score = sc.nextInt(); sc.close(); // 풀이방법 2가지 // 첫번째 : if문 if(score >=90 && score <=100){ System.out.println("A"); }else if(score >=70 && score < 90){ System.out.println("B"); }else if(score >=40 && score < 70){ System.out.println("C"); }else{ System.out.println("D"); } // 두번째 : switch문 switch (score/10) { case 10 : case 9 : System.out.println("A"); break; case 8 : case 7 : System.out.println("B"); break; case 6 : case 5 : case 4 : System.out.println("C"); break; case 3 : case 2 : case 1 : System.out.println("D"); break; default : System.out.println("D"); } } }