using System;  

//using System.Collections.Generic;  

​

public class TestClass<T>  

{  

    T[] obj = new T[5];  

    int count = 0;  

    public void  Add(T item)  

    {  

        if (count + 1 < 6)  

        {  

            obj[count] = item;  

        }  

        count++;  

    }  

    public T this[int index]  

    {  

        get { return obj[index]; }  

        set { obj[index] = value; }  

    }   

}  

public class Program  

{  

    public static void Main(string[] args)  

    {  

        TestClass<int> intObj = new TestClass<int>();  

        intObj.Add(1);  

        intObj.Add(2);  

        intObj.Add(3);

        intObj.Add(4);   

        intObj.Add(5);  

        for (int i = 0; i < 5; i++)  

        {  

            Console.WriteLine(intObj[i]); 

        }     

    }  

}