CG Infinity .NET Developer interview questions

1.Wap for operator overloading 2.I dont exactly remember the ques:Suppose I have a very old kind of low level programming language that does not have in-built functionalities.In such a language how would I be able to find the length of an array? and the hint had something to do with odd/even indexes...idk. 3.There are three boxes, one contains only apples, one contains only oranges, and one contains both apples and oranges. The boxes have been incorrectly labeled such that no label identifies the actual contents of the box it labels.In how many steps can you immediately label all of the boxes correctly? 4.Which Inheritance is not supported in c++?