C generic class case

  Generic foundation entry class  

  public  class Program
    {
        public class Static<T>           // Generic classes defined 
        {
            int pos;
            T[] data = new T[100];        // Define generic arrays 
            public void Push(T obj)      // Into the stack, 
            {
                data[pos++] = obj;
            }

            public T Pop(T obj)          // The stack, 
            {
                return data[--pos];
            }
        }
        static void Main(string[] args)
        {
            var stack = new Stack<int>();
            // It can also be written as ：Stack<int> stack=new Stack<int>();
            stack.Push(5);
            stack.Push(10);
            stack.Push(11);
            stack.Push(1);
            int x = stack.Pop();   //x=5
            int y = stack.Pop();   //y=10

            int a = stack.Pop();  //a=11
            int b = stack.Pop(); //b=1

            Console.WriteLine("{0},{1},{2