Program to push element in stack using 'Push' method in C#

using System;
using System.Collections;

namespace ConsoleApplication1
{
    
    class Program
    {
        static void Main()
        {
            Stack S = new Stack(5);

            S.Push(10);
            S.Push(20);
            S.Push(30);
            S.Push(40);

            Console.WriteLine("Elements are pushed successfully");

        }
    }
}

Output

Elements are pushed successfully

Note: In above program, to use 'Stack' class, we need to include System.Collection namespace.