static void Main(string[] args) { int choice, x; StackA st = new StackA(8); while (true) { Console.WriteLine("1. Push an element on the stack"); Console.WriteLine("2. Pop an element from the stack"); Console.WriteLine("3. Display the top element"); Console.WriteLine("4. Display all stack elements"); Console.WriteLine("5. Display size of the stack"); Console.WriteLine("6. Quit"); Console.WriteLine(""); Console.WriteLine("Enter your choice : "); choice = Convert.ToInt32(Console.ReadLine()); if (choice == 6) { break; } switch (choice) { case 1: Console.Write("Enter the element to be pushed : "); x = Convert.ToInt32(Console.ReadLine()); st.Push(x); break; case 2: x = st.Pop(); Console.WriteLine("Popped element is : " + x); break; case 3: Console.WriteLine("Element at the top is : " + st.Peek()); break; case 4: st.Display(); break; case 5: Console.WriteLine("Size of stack " + st.Size()); break; default: Console.WriteLine("Wrong choice"); break; } Console.WriteLine(""); } }