Important section:

it include all OOP Concepts and code will be complete in c++; It is basically a water drinking application in c++

write a c++ program in which You have to make a main class i.e nested. N you have to make 10 to 12 subclasses of it who will serve as a shop for it then the main class have to serve water to all the sub classes then you have to add a number limit and add it to main class that he have to generate the same amount of water to supply it all supposed that the limit of water is 10 ltr he will take 2 ltr remaining 8 will be left.