What is PDS( Passive data Structure) ?

Question

How to coding in c ?

Answer 1

A PDS type in C++, or Plain Old C++ Object, is defined as either a scalar type or a PDS class. A PDS class has no user-defined copy assignment operator, no user-defined destructor, and no non-static data members that are not themselves PDS. Moreover, a PDS class must be an aggregate, meaning it has no user-declared constructors, no private nor protected non-static data, no virtual base classes[a] and no virtual functions. The standard includes statements about how PDS must behave in C++. The type_traits library in the C++ Standard Library provides a template named is_pod that can be used to determine whether a given type is a POD.