Esempio n. 1
0
 private void BtnCos_Click(object sender, EventArgs e)
 {
     //if there's input call the Third library and perform the cos function
     if (CheckForInput(tbResult.Text))
     {
         tbResult.Text = Trigonometry.DegreesCos(double.Parse(tbResult.Text)).ToString();
         isTotal       = true;
     }
     //if there's no input or input is invalid print error to user
     else
     {
         MessageBox.Show("Please enter valid input");
     }
 }