private void buttonClick(object sender, EventArgs e)
{
Button button = (Button)sender; //get button clicked
if (button.Text == "C") //clears last enter number
{
int keyStrokesLength = keyStrokes.Length;
keyStrokes = keyStrokes.Remove(keyStrokesLength - 1);
labelExpression.Text = keyStrokes;
}
else if (button.Text == "Clear All") //clears expression
{
keyStrokes = String.Empty;
textBoxDisplay.Text = String.Empty;
labelExpression.Text = String.Empty;
}
else if (button.Text == "%") //calculates percentages
{
double doubleKeyStrokes = Convert.ToDouble(keyStrokes);
textBoxDisplay.Text = button.Text;
if (doubleKeyStrokes >= 1) //converts percent to decimal
{
double toPercentKeyStrokes = doubleKeyStrokes / 100;
textBoxDisplay.Text = Convert.ToString(toPercentKeyStrokes);
}
else //converts decimal to percent
{
double fromPercentKeyStrokes = doubleKeyStrokes * 100;
textBoxDisplay.Text = Convert.ToString(fromPercentKeyStrokes);
}
}
else if (button.Text == "sin") //calculates sin, default unit is radians
{
double keyStrokesSin = Math.Sin(Convert.ToDouble(keyStrokes));
textBoxDisplay.Text = Convert.ToString(keyStrokesSin);
}
else if (button.Text == "cos") //Calcualates cos, default unit is radians
{
double keyStrokesCos = Math.Cos(Convert.ToDouble(keyStrokes));
textBoxDisplay.Text = Convert.ToString(keyStrokesCos);
}
else if (button.Text == "tan") //calculates tan, default unit is radians
{
double keyStrokesTan = Math.Tan(Convert.ToDouble(keyStrokes));
textBoxDisplay.Text = Convert.ToString(keyStrokesTan);
}
else if (button.Text == "log") //get checked
{
double keyStrokesLog = Math.Log10(Convert.ToDouble(keyStrokes));
textBoxDisplay.Text = Convert.ToString(keyStrokesLog);
}
else if (button.Text == "ln") //get checked
{
double keyStrokesLog = Math.Log(Convert.ToDouble(keyStrokes));
textBoxDisplay.Text = Convert.ToString(keyStrokesLog);
}
else if (button.Text == "1/x") //reciprocal
{
double keyStrokesRecip = 1 / Convert.ToDouble(keyStrokes);
textBoxDisplay.Text = Convert.ToString(keyStrokesRecip);
}
else if (button.Text == "|x|") //absolute value
{
double keyStrokesAbs = Math.Abs(Convert.ToDouble(keyStrokes));
textBoxDisplay.Text = Convert.ToString(keyStrokesAbs);
}
else if (button.Text == "√") //square root the number
{
double keyStrokesSquare = Math.Sqrt(Convert.ToDouble(keyStrokes));
textBoxDisplay.Text = Convert.ToString(keyStrokesSquare);
}
/*else if (button.Text == "^") //raise the first number by the second number
* {
* string[] exponents = keyStrokes.Split('^');
*
* double num1 = Convert.ToDouble(exponents[0]);
* double num2 = Convert.ToDouble(exponents[1]);
*
* double keyStrokesPow = Math.Pow(num1, num2);
* textBoxDisplay.Text = Convert.ToString(keyStrokesPow);
* }*/
else if (button.Text == "π")//input pi into keystrokes
{
keyStrokes += PI;
textBoxDisplay.Text = "π";
labelExpression.Text = keyStrokes;
}
else if (button.Text == "+/-") //change from positive to negative
{
keyStrokes += "-";
textBoxDisplay.Text = "+/-";
//labelExpression.Text = "-";
}
/*else if (button.Text == "EE") //convert to scientific notation
* {
* //string keyStrokesSciNot = String.Format("{0:#.##e-00}", keyStrokes);
* textBoxDisplay.Text = string.Format("{0:E2}", keyStrokes);
* }*/
else if (button.Text == "Unit Convert")
{
Form2 form2 = new Form2();
form2.ShowDialog();
}
else if (button.Text != "=") // deals with all number buttons and function buttons
{
keyStrokes += button.Text;
labelExpression.Text = keyStrokes;
textBoxDisplay.Text = button.Text;
return;
}
if (button.Text == "=") //calculates numerical expression when = clicked
{
textBoxDisplay.Text = button.Text;
Expression expression = new Expression(keyStrokes);
textBoxDisplay.Text = Convert.ToString(expression.Evaluate());
}
}
private void scientificCalculatorToolStripMenuItem_Click(object sender, EventArgs e)
{
Form2 f2 = new Form2();
f2.ShowDialog();
}
