how we can do menu

[Strong_1]

1. Design a system for an electronics retail store which sells different brands of
   electronic items like TV, Fridge, Oven, Music System of different brands and
   styles.
2. You develop a menu driven system which looks like as given below:
   s. Sell
   g. Generate Bill
   c. Cancel the sale
   r. report for stocks
   d. damage items returned
   p. order to purchase stock
   e. exit
   When you run the application in the beginning you have to assume stock at
   certain level.