private void button15_Click(object sender, EventArgs e)
{
if (operation_performed == "+")
{
textBox_Result.Text = Logic.Add(result_value, Double.Parse(textBox_Result.Text)).ToString();
}
else if (operation_performed == "-")
{
textBox_Result.Text = Logic.Sub(result_value, Double.Parse(textBox_Result.Text)).ToString();
}
else if (operation_performed == "÷")
{
if (Double.Parse(textBox_Result.Text) != 0)
{
textBox_Result.Text = Logic.Div(result_value, Double.Parse(textBox_Result.Text)).ToString();
}
else
{
iszero = true;
}
}
else if (operation_performed == "NOD")
{
textBox_Result.Text = Logic.Nod(result_value, Double.Parse(textBox_Result.Text)).ToString();
}
else if (operation_performed == "X")
{
textBox_Result.Text = Logic.Times(result_value, Double.Parse(textBox_Result.Text)).ToString();
}
if (!iszero)
{
result_value = Double.Parse(textBox_Result.Text);
}
else if (iszero)
{
textBox_Result.Text = "Учи матешу!";
}
operation_performed = "";
}