You could go about this by using If and Else statements.
Example
Code:
float appetizer = 0; // Assign it to zero
if(radioButton1.Checked) { // Check if Soup radio is checked
appetizer = 2.00f; // if true change value of appetizer
}
else if(radioButton2.Checked) {
appetizer = 2.50f;
}
Since you can't put a float into TextBox1.Text, you need to convert float to string
Code:
textBox1.Text = appetizer.ToString();
I won't give out the rest since it is an assignment.
I am sure you can figure out the rest for yourself.
Bai