Define composition of function with example

Answer 1

the composition of a function is simple. define objects (variables) use mathematical , logical, string, or boolean operators. set up some arguments run em through if, else, elif, or, not... a function is a piece of code that can be executed at any moment. Function crosses his arms an goes "hmph i aint doing nothing unless i have to. then you set up sumthing like:
if the sky == blue:
*whateverfunction("vars needed to preform func")

Answer 2

if sky not green: stop here and clean my yard.