private void button18_Click(object sender, EventArgs e)
{
operation_pressed = false;
equation.Text = "";
switch (operation)
{
case "+":
result.Text = Operator.Add(value, double.Parse(result.Text)).ToString();
break;
case "-":
result.Text = Operator.Sub(value, double.Parse(result.Text)).ToString();
break;
case "*":
result.Text = Operator.Times(value, double.Parse(result.Text)).ToString();
break;
case "/":
if (result.Text == "0")
{
MessageBox.Show("Division Into Infinity ? ");
}
result.Text = Operator.Div(value, double.Parse(result.Text)).ToString();
break;
case "sqrt":
if (double.Parse(result.Text) < 0)
{
MessageBox.Show("See complex number i ");
}
result.Text = Operator.Sqrt(double.Parse(result.Text)).ToString();
break;
case "sq":
result.Text = Operator.PowToTwo(double.Parse(result.Text)).ToString();
break;
case "1 / x":
if (result.Text == "0")
{
MessageBox.Show("Division Into Infinity ? ");
}
result.Text = Operator.OneDivX(double.Parse(result.Text)).ToString();
break;
default:
break;
}
value = double.Parse(result.Text);
operation = "";
}
