Question

Task 2: Create a class Person with member data name, ID, constructor, destructor and member function display.
Create a class Student_info, which inherits class Person, in which member data for faculty number, group and faculty are added. The class contains a constructor, member functions for accessing the data, for change of ID and for displaying the data.
Add Class Student_marks, which inherits class Student_info and contains marks in 3 subjects, constructor, member function show () to display the marks and member function av() to calculate the average grade.

Answer 1

Answer on Question#38562- Programming, C#

1. Task 2: Create a class Person with member data name, ID, constructor, destructor and member function display.

Create a class Student_info, which inherits class Person, in which member data for faculty number, group and faculty are added. The class contains a constructor, member functions for accessing the data, for change of ID and for displaying the data.

Add Class Student_marks, which inherits class Student_info and contains marks in 3 subjects, constructor, member function show () to display the marks and member function av() to calculate the average grade.

Solution.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
            Person prs = new Person(Convert.ToInt32(Console.ReadLine()), Console.ReadLine());
            prs.Show();
            Console.Read();
        }
    }
    public class Person
    {
        protected string Name;
        protected int ID;
        public Person(int id, string name)
        {
            ID = id; Name = name;
        }
        ~Person()
        {
        }
        public void Show()
        {
            Console.WriteLine("\nID: {0}\nName: {1}", ID, Name);
        }
    }
    public class Student_info : Person
    {
        private int facultyNum;
        private int group;
        public Student_info(int id, string name, int fNum, int gNum) : base(id, name)
        {
            facultyNum = fNum;
            group = gNum;
        }
        ~Student_info()
        {
        }
        public void changeData(int id)
        {
            ID = id;
        }
        public void Show()
        {
            Console.WriteLine("ID: {0}, \nFaculty number: {1}, \nGroup: {2}", ID, facultyNum, group);
        }
    }
    public class Student_marks : Student_info
    {
        private int mark_1;
        private int mark_2;
        private int mark_3;
        private int avmarks;
        public Student_marks(int id, string name, int fNum, int gNum, int m_1, int m_2, int m_3) : base(id, name, fNum, gNum)
        {
            mark_1 = m_1;
            mark_2 = m_2;
            mark_3 = m_3;
        }
        public int av()
        {
            avmarks = (mark_1 + mark_2 + mark_3) / 3;
            return avmarks;
        }
        public void Show()
        {
            Console.WriteLine("Marks: 1) {0}, 2) {1}, 3) {2} and average: {3}", mark_1, mark_2, mark_3, avmarks);
        }
    }
}