static void Main(string[] args)
{
stack = new Stack();
adder = new Operators.Adder();
subtractor = new Operators.Subtructor();
multiplier = new Operators.Multiplier();
divider = new Operators.Divider();
resultPresenter = new Operators.ResultPresenter();
CalculatorApp calculator = new CalculatorApp(stack, adder, subtractor, divider, multiplier, resultPresenter);
}
public CalculatorApp(Stack stack, Operators.Adder adder, Operators.Subtructor subtructor, Operators.Divider divider,
Operators.Multiplier multiplier, Operators.ResultPresenter resultPresenter)
{
// console version
Console.WriteLine("Welcome to RPN Calculator in C sharp.\nPlease enter a string in the manner shown:\n1 (Enter) 5 (Enter) + (Enter).");
Console.WriteLine("To finish your expression just type EXT.");
while ((expression = Console.ReadLine()) != "EXT")
{
switch (expression)
{
case "+":
adder.operate(stack);
break;
case "-":
subtructor.operate(stack);
break;
case "/":
divider.operate(stack);
break;
case "*":
multiplier.operate(stack);
break;
default:
if (int.TryParse(expression, out number))
{
stack.Push(number);
}
else
{
continue;
}
break;
}
}
Console.WriteLine("The result is:\t");
foreach (Object element in stack) // must be one if correct
{
Console.Write(element);
}
}
