[JAVA] ch04-05. 등급 나누기

public class Ex05 {
    public static void main(String[] args){
        int score = 82;
        String grade = "";
        System.out.println("Score : "+score);
        
        if(score > 90){
            grade = "A";
            if(score > 88) grade += "+";
            else if(score < 84) grade += "-";
        }else if(score >= 80){
            grade = "B";
            if(score > 78) grade += "+";
            else if(score <74) grade += "-";
        }else if(score >= 70){
            grade = "C";
        }
        System.out.println(grade + "등급");
    }
}