Write a program called

fToC.py that asks the user for a temperature in Fahrenheit and converts it to Celsius.

Details:

The lowest possible Fahrenheit temperature is $459\mathrm{.}67.$ There is no upper limit$.$

If the user enters a Fahrenheit temperature, your program should ask them for an input again. Your program should keep asking until the user enters a temperature greater than or equal to $-459\mathrm{.}67.$ You should use a while loop like we did in Friday's lecture.

The equation for converting $F$ to $C$ is: $C=(F-32)**\frac{5}{9}$

You should use functions to organize your code.

Examples

Example $1$: $32$ Fahrenheit is $0$ Celsius.

Enter a Fahrenheit temperature: $32$

$32\mathrm{.}0F=0\mathrm{.}0C$