Use of switch together with RadioButton (and incorrect work of switch)?

Question

C++ / C#

Good afternoon :)
There was a problem in using the Switch operator.
There is a code that, accordingly, works with If:

private: System::Void otvetButton_Click(System::Object^ sender, System::EventArgs^ e) {

double a, b, I, F, x;
int n;

a = Convert::ToDouble(aPredelText->Text);
b = Convert::ToDouble(bPredelText->Text);
n = Convert::ToInt32(nText->Text);


if (constRadioButton->Checked) {
F = f(x);
I = Integr(a, b, n);
}

if (stepenRadioButton->Checked) {
I=155; //переменная пока вставлена для проверки работы
}

otvet->Text = I.ToString("n");

}

And I need that when one of several radio buttons is pressed, a certain case in the switch works. How can this be done?
And, to be honest, there is a small problem in the form of the fact that I tried to just start the switch in order to try if it would work. It looked like this:

private: System::Void otvetButton_Click(System::Object^ sender, System::EventArgs^ e) {

double a, b, I, F, x;
int n;

a = Convert::ToDouble(aPredelText->Text);
b = Convert::ToDouble(bPredelText->Text);
n = Convert::ToInt32(nText->Text);

switch (n)
{
case '1': {
F = f(x);
I = Integr(a, b, n);
}
break;

case '2':
I=155;
break;
}

otvet->Text = I.ToString("n");

}

those. depending on the value of the variable n entered by me, a certain case should have been selected. But this does not happen, and as a result, I get 0.00 in the answer text field.
What is wrong and what needs to be corrected?
They didn’t ban me on Google, I just didn’t find my problem there :) And all that is, in whatever languages, is in C # and a little in a version that I don’t need :(

Answer 1

First - why the switch broke - remove the quotes. C++ treats your '1' as the number 49 (ASCII character code 1).
The second is how to make a switch react to a radiobutton - I haven't used the VCL for a long time, but it's possible that the groupBox in which your switches are located can find out which one is selected.