ダミーオブジェクトとオブジェクトのマルチステート
13089 ワード
Virtual memebers:
Polymorphism:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication2
{
class Person
{
public string Firstname { get; set; }
public string SecondName { get; set; }
public virtual void Display()
{
Console.WriteLine("Person - {0}, {1}", Firstname, SecondName);
}
public virtual int CalculateYearIncome(int year)
{
if (year < 2000)
{
return 50000;
}
return 10000;
}
}
class Employee : Person
{
public int YearIncome { get; set; }
public override void Display()
{
Console.WriteLine("Employee - {0}, {1}, {2}", Firstname, SecondName, YearIncome);
}
public override int CalculateYearIncome(int year)
{
return 1000;
}
}
class Program
{
static void Main(string[] args)
{
List<Person> myList = new List<Person>();
Person p1 = new Person();
p1.Firstname = "Nelson";
p1.SecondName = "LaQuest";
Employee e1 = new Employee();
e1.Firstname = "whoa";
e1.SecondName = "hey";
e1.YearIncome = 23;
myList.Add(p1);
myList.Add(e1);
foreach (var item in myList)
{
item.Display();
Console.WriteLine("Year income of 2004 -> {0}", item.CalculateYearIncome(2004));
}
Console.ReadKey();
}
static string GetString(string prompt)
{
Console.Write("{0}>", prompt);
return Console.ReadLine();
}
}
}Polymorphism:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication2
{
class Person
{
public string Firstname { get; set; }
public string SecondName { get; set; }
public virtual void Display()
{
Console.WriteLine("Person - {0}, {1}", Firstname, SecondName);
}
}
class Employee : Person
{
public int YearIncome { get; set; }
public override void Display()
{
Console.WriteLine("Employee - {0}, {1}, {2}", Firstname, SecondName, YearIncome);
}
}
class Program
{
static void Main(string[] args)
{
List<Person> myList = new List<Person>();
for (int i = 0; i < 3; i++)
{
myList.Add(GetPersonInput());
}
foreach (var item in myList)
{
item.Display();
}
Console.ReadKey();
}
static Person GetPersonInput()
{
while (true)
{
Console.WriteLine("[1] - Person
[2] - Employee");
int choice = int.Parse(Console.ReadLine());
if (choice == 1)
{
Person person = new Person();
person.Firstname = GetString("First Name");
person.SecondName = GetString("Second Name");
return person;
}
else if (choice == 2)
{
Employee employee = new Employee();
employee.Firstname = GetString("First Name");
employee.SecondName = GetString("Second name");
Console.WriteLine("Year of Income> ");
employee.YearIncome = int.Parse(Console.ReadLine());
return employee;
}
}
}
static string GetString(string prompt)
{
Console.Write("{0}>", prompt);
return Console.ReadLine();
}
}
}