/* Code for exercise 4.3. |  | "C++ Solutions--Companion to The C++ Programming Language, Third Edition" | by David Vandevoorde; Addison-Wesley 1998; ISBN 0-201-30965-3. | | Permission to use, copy, modify, distribute and sell this software | and its documentation for any purpose is hereby granted without fee. | The author makes no representations about the suitability of this | software for any purpose.  It is provided "as is" without express or | implied warranty. `----------------------------------------------------------------------*/#include <iostream>#include <typeinfo>template<typename T>struct Type {   static void print() {       std::cout << "sizeof(" << typeid(T).name() << ") = "                << sizeof(T) << std::endl;   }};struct Polymorph {   virtual ~Polymorph() {}};enum Bit { zero, one };enum Intensity { black = 0, brightest = 1000 };int main() {   // Fundamental integral types:   Type<bool>::print(); // May not be one (but can be).   Type<char>::print(); // This must be one!   Type<signed char>::print();   Type<unsigned char>::print();   Type<wchar_t>::print(); // No signed/unsigned variants.   Type<signed short>::print();   Type<unsigned short>::print();   Type<signed int>::print();   Type<unsigned int>::print();   Type<signed long>::print();   Type<unsigned long>::print();#ifdef LONGLONG_EXT   Type<signed long long>::print();   Type<unsigned long long>::print();#endif   // Fundamental floating-point types:   Type<float>::print();   Type<double>::print();   Type<long double>::print();   // Pointer types:   Type<int*>::print();   Type<int (*)()>::print(); // Pointer to function      // Pointer to member function:   Type<void (Polymorph::*)()>::print();    Type<void*>::print(); // May be larger than int* (rare)   // Enumeration types:   Type<Bit>::print();   Type<Intensity>::print();   return 0;}