public Student(string name,int studentId,string[] courses,int[] grades)
    {
        this.name = name;
        this.studentId = studentId;
        this.courses = courses;
        this.grades = grades;

    }
    public void info()
    {
        Console.WriteLine("name of the student is" + name);
        Console.WriteLine("StudentID of the student is" + studentId);
        Console.WriteLine("courses taken by student are" + courses);
        Console.WriteLine("grades earned by the student are" + grades);

    }
    public void sleep()
    {
        Console.WriteLine("enter the amount of time the student slept");
        int sleep=Convert.ToInt32(Console.ReadLine());
        int a = grades.Length;
        int b = 0;
        if (b<a)
        {
            grades[b] = grades[b] - (sleep / 10);
        }




    }
}