Dew point is used to identify the temperature at which water vapor condenses into dew. define a function named as getdewpoint, which takes temperature and humidity as parameters. and returns the dew point calculated by using the following formula:
d e w space p o i n t space equals space t e m p space minus space left parenthesis fraction numerator 100 minus space h u m i d i t y over denominator 2.778 end fraction right parenthesis