static void Main(string[] args)
{
CalculatorInvoker client = new CalculatorInvoker();
client.Compute('+', 12);
client.Compute('+', 12);
client.Compute('/', 3);
client.Compute('*', 3);
client.Compute('-', 3);
Console.WriteLine("undos: ");
client.Undo();
client.Undo();
client.Undo();
client.Undo();
client.Undo();
Console.WriteLine("redos: ");
client.Redo();
client.Redo();
client.Redo();
client.Redo();
}
public Client()
{
_calculatorInvoker = new CalculatorInvoker();
}
