date1.h

这是C＋＋编程经典的书上实例的源代码。 （英文名是《C＋＋ how to program》第3版）

// Fig. 8.6: date1.h
// Definition of class Date
#ifndef DATE1_H
#define DATE1_H
#include <iostream>

using std::ostream;

class Date {
   friend ostream &operator<<( ostream &, const Date & );

public:
   Date( int m = 1, int d = 1, int y = 1900 ); // constructor
   void setDate( int, int, int ); // set the date
   Date &operator++();            // preincrement operator
   Date operator++( int );        // postincrement operator
   const Date &operator+=( int ); // add days, modify object
   bool leapYear( int ) const;    // is this a leap year?
   bool endOfMonth( int ) const;  // is this end of month?

private:
   int month;
   int day;
   int year;

   static const int days[];       // array of days per month
   void helpIncrement();          // utility function
};

#endif



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