How to write a menu driven program to perform the following .(use switch case statement)

Question

(a) to print the series 0,3,8,15,24...n term (value of 'n' is to be an input by the user).
(b) to find the sum of the series given below:
S=1/2+3/4+5/6+7/8.....19/20.

Answer 1

dont know