选择结构

public class a{
    public static void main(String[] args){
        Scanner input = new Scanner(System.in);
        System.out.println("输入张浩的Java成绩:");
        int score = input.nextInt();
        if (score > 98){
            System.out.println("老师说:不错，奖励一个MP4!");
        }
    }
}

public class b{
    public static void main(String[] args){
        Scanner console = new Scanner(System.in);
        System.out.println("请输入张浩的成绩:");
        int score = console.nextInt();
        if(score > 98){
            System.out.println("老师说:奖励一个苹果");
        }else{
            System.out.println("老师说:抄代码");
        }
    }
}

public class c{
    public static void main(String[] args){
          int score=70;
     if(score >= 80){
         System.out.println("良好");
        }else if(score >= 60){
             System.out.println("中等");
        }else{
             System.out.println("差");
        }
    }
}  

public class d{
    public static void main(String[] args){
        Scanner input = new Scanner(System.in);
        System.out.println("请输入比赛成绩(s):");
        double score = input.nextDouble();
        System.out.println("请输入性别:");
        String gender = input.next();
        if(score <= 10){
            if(gender.equals("男")){
                System.out.println("进入男子组决赛!");
            }else if(gender.equals("女")){
                System.out.println("进入女子组决赛!");
            }
        }else{
            System.out.println("淘汰！");
        }
    }
}