What is difference between define and typedef in c plus plus?
#define is a preprocessor directive used to declare macros. typedef is a C++ keyword to define a data type.
The internal members of a struct are the same for both C and C++. However, a C struct has no member methods and is entirely public. A C++ struct, on the other hand, is public by default but otherwise works exactly the same as a class. Aside from object-oriented nature of the C++ struct, the major difference between the two is in the declaration.In C, you could declare a struct in a variety of ways…
You don't need a typedef to declare a struct in C++. A struct is declared exactly the same way that you would declare a class, the only difference being that struct members are public by default, while class members are private by default. Aside from that the class and struct keywords are completely interchangeable.