and a relative humidity 
.
From the user, we are given an air temperature
and a relative humidity .
If the air temperature is given in degrees Celsius 
,
we must convert the temperature value to degrees Fahrenheit 
To do this, check out the temperature conversion formula at:
http://www.srh.noaa.gov/elp/wxcalc/formulas/tempConvert.html
Then, we can calculate the heat index with this complex formula:
