1.What is a Data Structure? Explain its need?
2.What is a Directed Graph? Write an algorithm to find
whether a Directed Graph is connected or not?
3.Explain the process of converting a Tree to a Binary Tree.
15.what is the disadvantage of using macros?
16.what is the self-referential structure?
17.can a union be self-referenced?
18.What is a pointer?
19.What is the Lvalue and Rvalue?
20.what is the difference between these initializations?
23.Does *p++ increment p, or what it points to?