程序代码：

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

namespace test
{
    class MyStack<T>
    {
        public T[] Myarray;
        public int count;
        public MyStack(int m)
        {
            Myarray = new T[m];
            count = 0;
        }

        public void push(T a)
        {
            Myarray[count++] = a;

        }
        public T pull()
        {
            return Myarray[--count];
        }
    }

    class Program
    {
        static void Main(string[] args)
        {

            MyStack<int> myStack = new MyStack<int>(10);
            myStack.push(1);
            myStack.push(2);
            myStack.push(3);
            for (int i = 0; 1 < 3; i++)
            {
                Console.WriteLine(myStack.pull());
            }

         
        }
    }
}