Functionality

At the least, your program should allow for the following

I. User Input: One text field where the user will type in the temperature in Fahrenheit

II$.$ Input Validation: When the "Show results" button is clicked, your program should

check to see if the user has left the text field empty and also if what the user typed is a

number and not anything else.

III. If there are problems $($as in II$.$ above$)$ then your program should show appropriate error

messages

IV$.$ Display results: If there are no errors and user input is valid, then your program should

show the results to the user.

Screen shots are included below to help you get started.

Note: The temperature conversion function is $C=(F-32)**(\frac{5}{9})$