Altair Engineering interview question

1st Round Object oriented programming concepts Polymorphism, Inheritance, Abstraction etc. Name mangling, function overloading vs overriding. use of extern keyword public private protected specifiers Object construction destruction order , pointers vs references. Puzzle:- Standard 2-Jar 3Leter-5Leter puzzle. ****************************************************************** Second round:- About current project overview Software design patterns used in project Applications of various data structures like Stack/Queue/Graph etc. Binary search tree . Singleton design pattern. Is-A / Has- A relationship with examples. Composition vs Private inheritance. Abstract class . Standard Torch and Bridge puzzle. ****************************************************************** 3rd Round Virtual and Pure virtual function. How you will find memory leak in application. Brief about company projects. Dynamic memory management Given a problem statement - Design it (keep it well design).