Your friend is traveling abroad to the United States so he wrote a program to convert fahrenheit to celsius. Unfortunately his code has some bugs.
Find the errors in the code to get the celsius converter working properly.
To convert fahrenheit to celsius:
celsius = (fahrenheit - 32) * (5/9)
Remember that typically temperatures in the current weather conditions are given in whole numbers. It is possible for temperature sensors to report temperatures with a higher accuracy such as to the nearest tenth. Instrument error though makes this sort of accuracy unreliable for many types of temperature measuring sensors.