private void equlButton_Click(object sender, RoutedEventArgs e)
{
double newNumber;
bool divisionZero = false;
newNumber = double.Parse(resultLabel.Content.ToString());
switch (selectedOperator)
{
case SelectedOperator.Addition:
result = SimpleMath.Add(lastNumber, newNumber);
break;
case SelectedOperator.Subtraction:
result = SimpleMath.Subtract(lastNumber, newNumber);
break;
case SelectedOperator.Multiplication:
result = SimpleMath.Multiple(lastNumber, newNumber);
break;
case SelectedOperator.Division:
if (newNumber != 0)
{
result = SimpleMath.Division(lastNumber, newNumber);
}
else
{
divisionZero = true;
lastNumber = 0;
}
break;
}
if (divisionZero)
{
resultLabel.FontSize = 30;
resultLabel.Content = "0 으로 나눌 수 없습니다.";
}
else
{
resultLabel.Content = result.ToString();
}
}