private void equals_Click(object sender, EventArgs e)
{
double Result = 0;
switch (sOperator)
{
case "+":
Result = float.Parse(sFirstValue) + float.Parse(ResultText.Text);
break;
case "-":
Result = float.Parse(sFirstValue) - float.Parse(ResultText.Text);
break;
case "*":
Result = float.Parse(sFirstValue) * float.Parse(ResultText.Text);
break;
case "/":
Result = float.Parse(sFirstValue) / float.Parse(ResultText.Text);
break;
case "sin":
double val = double.Parse(sFirstValue);
Result = Math.Sin(val * Math.PI / 180);
break;
case "cos":
double ans = double.Parse(sFirstValue);
Result = Math.Cos(ans * Math.PI / 180);
break;
case "tan":
ans = double.Parse(sFirstValue);
Result = Math.Tan(ans * Math.PI / 180);
break;
case "fact":
double fact = 1;
double value = double.Parse(sFirstValue);
for (double i = value; i >= 1; i--)
{
fact = fact * i;
}
Result = fact;
break;
case "square":
Result = float.Parse(sFirstValue) * float.Parse(sFirstValue);
break;
}
ResultText.ResetText();
ResultText.Text = Convert.ToString(Result);
}
private void clickAdd_Click(object sender, EventArgs e)
{
sFirstValue = ResultText.Text;
ResultText.ResetText();
sOperator = clickAdd.Text;
}
private void divide_Click(object sender, EventArgs e)
{
sFirstValue = ResultText.Text;
ResultText.ResetText();
sOperator = divide.Text;
}
private void tabButton_Click(object sender, EventArgs e)
{
sFirstValue = ResultText.Text;
ResultText.ResetText();
sOperator = tabButton.Text;
}
private void subtract_Click(object sender, EventArgs e)
{
sFirstValue = ResultText.Text;
ResultText.ResetText();
sOperator = subtract.Text;
}