If you carefully observe function definitions of question1, you find functions sub1() and cube2()

Q. If you carefully observe the function definitions of question1, you'll find functions sub1() and cube2() are basically doing the same thing - calculating difference between two values.

Logically they are doing same thing but technically these are different. What is the difference?

(Hint: carefully look at the function bodies)

Answer :-

sub1() function print the values while cube2() function return the value.