static void Main(string[] args)
{
stack = new NodeStack <string>();
stack.CollectionChanged += Stack_CollectionChanged;
int key = 1, answer;
string value = "", peek, del;
while (key != 0)
{
Console.Clear();
Console.Write(
" Menu:\n" +
"1: Add value to stack.\n" +
"2: Show all values from stack.\n" +
"3: Show top value of stack.\n" +
"4: Delete value from stack.\n" +
"0: Exit.\n" +
"Enter key: ");
key = Convert.ToInt32(Console.ReadLine());
switch (key)
{
//добавляем элементы в стек
case 1:
Console.Write("\nHow many values do you want to insert?: ");
answer = Convert.ToInt32(Console.ReadLine());
for (int i = 0; i < answer; i++)
{
Console.Write("Add value: ");
value = Console.ReadLine();
stack.Push(value);
if (message != null)
{
Console.WriteLine($"\n{message}\n");
}
}
break;
//выводим вместимое стека
case 2:
try
{
stack.ReturnEmpty();
Console.WriteLine("\nStack values:\n");
foreach (var elem in stack)
{
Console.WriteLine(elem);
}
Console.WriteLine();
}
catch (InvalidOperationException err)
{
Console.WriteLine(err.Message);
}
break;
case 3:
try
{
stack.ReturnEmpty();
peek = stack.Peek();
Console.WriteLine($"\nTop value in stack: {peek}\n");
}
catch (InvalidOperationException err)
{
Console.WriteLine(err.Message);
}
break;
case 4:
try
{
stack.ReturnEmpty();
del = stack.Pop();
Console.WriteLine($"\nDeleted value is: {del}");
if (message != null)
{
Console.WriteLine($"\n{message}\n");
}
}
catch (InvalidOperationException err)
{
Console.WriteLine(err.Message);
}
break;
case 0:
return;
default:
Console.WriteLine("\nWrong input! Try again.\n");
break;
}
Console.Write("Press any key to continue...");
Console.ReadKey();
}
}
