C#练习——继承与重载、索引器

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ReviewPractice
{
class Person //Person类
{
#region 创建一个Person类，属性：姓名、性别、年龄；方法：SayHi() 。再创建一个Employee类继承Person类，扩展属性Salary,重写SayHi方法。
private string name;
private int age;
private string sex;

public string Name
{
get
{
return name;
}

set
{
name = value;
}
}

public int Age
{
get
{
return age;
}

set
{
age = value;
}
}

public string Sex
{
get
{
return sex;
}

set
{
sex = value;
}
}
public virtual void SayHi()
{
Console.WriteLine("Hi~~~in Person");
}
#endregion
}

}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ReviewPractice
{
class Employee:Person //Employee类继承Person类
{
private float salary;

public float Salary
{
get
{
return salary;
}

set
{
salary = value;
}
}
//方法重写
public override void SayHi()
{
Console.WriteLine("Hi~~~in Employee");
}
}
}

//索引器

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ReviewPractice
{
class ItcastClass
{
#region 编写一个类：ItcastClass,该类中有一个私有字段_names,数据类型为：字符串数组，长度为5，并且有5个默认的姓名。要求：为ItcastClass类编写一个索引器，要求该索引器能够通过下标来访问_names中的内容。

//索引器的目的在于方便，可在该类型的对象后面直接加一对中括号[]就能访问该类型的成员内容
private string[] _names= { "迪丽热巴","赵丽颖","杨幂","刘诗诗","唐嫣"};
public int Length
{
get
{
return _names.Length;
}
}
//索引器与属性类似
public string this[int index]
{
get
{
return _names[index];
}
set
{
_names[index] = value;
}
}
#endregion
}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ReviewPractice
{
class Program
{
static void Main(string[] args)
{
//调用
ItcastClass itClass = new ItcastClass();
for (int i = 0; i < itClass.Length; i++)
{
Console.WriteLine(itClass[i]);
}
Console.ReadKey();
}
}
}

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