You are assigned a unique store/service for which you are required to make a customized program, that keeps record of all the transactions.

you need to write a program in c++ language. You are required to maintain two files, products.txt and sales.txt. products.txt shall hold the record of all the products available in the shop. sales.txt should hold the record of all the products sold. (Those who are assigned services will name their files according to the the requirement of thier service) Your program should be written in the form of functions, and it must perform the following file handling oprerations: display, search, add, update, delete.