/// <summary>
/// functie die twee getallen uit de stack haald en juist operatie uitvoord en het antwoord terug op de stack zet
/// </summary>
/// <param name="operation"></param>
/// <returns></returns>
private string Calculate(string operation)
{
label.Text = null;
decimal two = 1;
decimal one = 2;
decimal awnser;
switch (selectedStack)
{
case "arraystack":
two = Astack.Pop();
one = Astack.Pop();
break;
case "Liststack":
two = Lstack.Pop();
one = Lstack.Pop();
break;
case "MyListStack":
two = MLstack.Pop();
one = MLstack.Pop();
break;
}
try
{
switch (operation)
{
case "/":
awnser = one / two;
return(Convert.ToString(awnser));
case "*":
awnser = one * two;
return(Convert.ToString(awnser));
case "-":
awnser = one - two;
return(Convert.ToString(awnser));
case "+":
awnser = one + two;
return(Convert.ToString(awnser));
}
}
catch (System.DivideByZeroException e)
{
listbox.Items.Remove(0);
MessageBox.Show("Tried to devide by zero");
return(null);
}
return(null);
}
