datetime.cpp

标准C++编写的小小CRM软件,无任何平台依赖.采用标准XML作为数据库.只需重新纺译,可在任何平台上运行.目前测试过在GCC和VC下都可以编译通过

// DateTime.cpp: implementation of the DateTime class.
//
//////////////////////////////////////////////////////////////////////

#include "DateTime.h"

//////////////////////////////////////////////////////////////////////

DateTime::DateTime()
{}

DateTime::DateTime(unsigned year,unsigned month,unsigned day,	
				   unsigned hour,unsigned minute,unsigned second)
				   :date(year,month,day),time(hour,minute,second)
{}

DateTime::DateTime( const Date& date, const Time& time )
:date(date),time(time)
{}

DateTime::DateTime( char *dt )
{
	char ch;
	istrstream tStream( dt );

	tStream>>date>>ch>>time;
}

DateTime::~DateTime()
{}

bool DateTime::operator == ( const DateTime& dt )
/* If two DateTime all the same then return true, else return false.*/
{	return date==dt.date && time==dt.time ;		}

bool DateTime::operator > ( const DateTime& dt )
/* If the first DateTime later then the follow , return true		*
 * else return false.												*/
{	return date>dt.date || date==dt.date && time>dt.time;	}

bool DateTime::operator < ( const DateTime& dt )
/* If the first time earlier then the follow , return true		*
 * else return false.											*/
{	return date<dt.date || date==dt.date && time<dt.time;	}

istream& operator >> ( istream& is,DateTime& dt )
{
	char ch;
	is>>dt.date>>ch>>dt.time;
	return is;
}
ostream& operator << ( ostream& os,DateTime& dt )
{
	os<<dt.date<<'/'<<dt.time<<endl;
	return os;
}