005 条件分岐（switch文） 023 解答例

import java.util.Scanner;

public class GradeEvaluation {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        System.out.print("成績を入力してください（A, B, C, D, F）: ");
        char grade = scanner.next().charAt(0);

        String evaluation;

        switch (grade) {
            case 'A':
                evaluation = "優秀";
                break;
            case 'B':
                evaluation = "良好";
                break;
            case 'C':
                evaluation = "可";
                break;
            case 'D':
                evaluation = "不可";
                break;
            case 'F':
                evaluation = "不明";
                break;
            default:
                evaluation = "評価がありません";
        }

        System.out.println("評価: " + evaluation);
    }
}