Implement the shared smart pointer. Write copy constructor and assignement operator overloaded. Write Singleton class.

-Briefly explain your work experience -rate yourself in C++ expertise -OOPS concepts -shallow v/s deep copy -what is malloc -malloc v/s new -Compare Union, Structure, Class -Access specifiers -what is the default access specifier in a class -Types of constructors -how a copy constructor works -what are provided by default in a class (constructor,...) -Can a constructor be private -Purpose of singleton class -Friend class & function -virtual class & function -Sizeof( class A{} ) -How to find number of objects created so far -static member -what are vectors -data structures -did you have to create & implement any data structure -Linux/Scripting -how to list hidden files -how to find a file -touch command -what happens if touch is used on existing file -vtable -are you familiar with debugging tools like GDB -are you familiar with versioning tools like git