/* 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. `----------------------------------------------------------------------*/// Some compilers still have <iostream.h> instead of <iostream>#include <iostream>// Omit the following using-declaration if your compiler// doesn't place cout in namespace std:using std::cout;struct Polymorph {   virtual ~Polymorph() {}};enum Bit { zero, one };enum Intensity { black = 0, brightest = 1000 };int main() {   // Fundamental integral types:   cout << "sizeof(bool)==" << sizeof(bool) << '\n';      // sizeof(bool) may not be one (but it can be).   cout << "sizeof(char)==" << sizeof(char) << '\n';   cout << "sizeof(signed char)=="        << sizeof(signed char) << '\n';   cout << "sizeof(unsigned char)=="        << sizeof(unsigned char) << '\n';   cout << "sizeof(wchar_t)==" << sizeof(wchar_t) << '\n';      // There are no signed/unsigned variants of wchar_t.   cout << "sizeof(signed short)=="        << sizeof(signed short) << '\n';   cout << "sizeof(unsigned short)=="        << sizeof(unsigned short) << '\n';   cout << "sizeof(signed int)=="        << sizeof(signed int) << '\n';   cout << "sizeof(unsigned int)=="        << sizeof(unsigned int) << '\n';   cout << "sizeof(signed long)=="        << sizeof(signed long) << '\n';   cout << "sizeof(unsigned long)=="        << sizeof(unsigned long) << '\n';#ifdef LONGLONG_EXT   cout << "sizeof(signed long long)=="        << sizeof(signed long long) << '\n';   cout << "sizeof(unsigned long long)=="        << sizeof(unsigned long long) << '\n';#endif   // Fundamental floating-point types:   cout << "sizeof(float)==" << sizeof(float) << '\n';   cout << "sizeof(double)==" << sizeof(double) << '\n';   cout << "sizeof(long double)=="        << sizeof(long double) << '\n';   // Pointer types:   cout << "sizeof(int*)==" << sizeof(int*) << '\n';   cout << "sizeof(int (*)())=="        << sizeof(int (*)()) << '\n';      // The above corresponds to a pointer to a function.      // Next is a pointer to a member function:   cout << "sizeof(void (Polymorph::*)())=="         << sizeof(void (Polymorph::*)()) << '\n';   cout << "sizeof(void*)==" << sizeof(void*) << '\n';   // Enumeration types:   cout << "sizeof(Bit)==" << sizeof(Bit) << '\n';   cout << "sizeof(Intensity)=="        << sizeof(Intensity) << '\n';   return 0;}