Listing 12 Adds operators to the Date class
// date5.h #include "bool.h" // until compilers support type bool class ostream; class Date { friend ostream & operator<<(ostream &, const Date &); public: Date(int, int, int); int compare(const Date &) const; bool operator==(const Date &) const; bool operator!=(const Date &) const; bool operator<=(const Date &) const; bool operator>=(const Date &) const; bool operator<(const Date &) const; bool operator>(const Date &) const; private: int month; int day; int year; static const char * month_text[13]; }; inline bool Date::operator==(const Date &d2) const { return compare(d2) == 0; } inline bool Date::operator!=(const Date &d2) const { return compare(d2) != 0; } inline bool Date::operator<=(const Date &d2) const { return compare(d2) <= 0; } inline bool Date::operator>=(const Date &d2) const { return compare(d2) >= 0; } inline bool Date::operator<(const Date &d2) const { return compare(d2) < 0; } inline bool Date::operator>(const Date &d2) const { return compare(d2) > 0; } /* End of File */