static void Main(string[] args)
        {
            Person ps = new Person();

            ps.Hello();
            Student st = new Student();

            st.Hello();
            st.SetAge(21);
            st.ShowAge();
            Teacher tc = new Teacher();

            tc.Hello();
            tc.SetAge(30);
            tc.Explain();
        }
Exemple #2
0
        static void Main(string[] args)
        {
            Person person = new Person();

            person.Hello();

            Student student = new Student();

            student.SetAge(21);
            student.Hello();
            student.ShowAge();

            Teacher teacher = new Teacher();

            teacher.SetAge(30);
            teacher.Hello();
            teacher.Explain();
        }