date.cpp

SSD5 练习2 需要的自己下载

/*Class Date models a date and time. This class contains 
private data members to store the day, month, 
and year of a date and the hour, minute, and second of a time. 
The class declaration includes the following public members.*/

#include <iostream>
#include <string>
#include "Date.h"

//Default constructor
Date::Date():month(0),day(0),year(0),hour(0),minute(0),second(0) {}

//Six parameter constructor 
Date::Date(int month, int day, int year, int hour, int minute, int second) {
	this->month = month;
	this->day = day;
	this->year = year;
	this->hour = hour;
	this->minute = minute;
	this->second = second;
}

//Accessors and Mutators
void Date::setMonth(int& newmonth) {
	month = newmonth;
}
void Date::setDay(int& newday) {
	day = newday;
}
void Date::setYear(int& newyear) {
	year = newyear;
}
void Date::setHour(int& newhour) {
	hour = newhour;
}
void Date::setMinute(int& newminute) {
	minute = newminute;
}
void Date::setSecond(int& newsecond) {
	second = newsecond;
}

int Date::getMonth(void) const {
	return month;
}
int Date::getDay(void) const {
	return day;
}
int Date::getYear(void) const {
	return year;
}
int Date::getHour(void) const {
	return hour;
}
int Date::getMinute(void) const {
	return minute;
}
int Date::getSecond(void) const {
	return second;
}

//operator== 
bool Date::operator== (const Date &rhs) {
     if ((month == rhs.month)&&(day == rhs.day)&&(year == rhs.year)
		 &&(hour == rhs.hour)&&(minute == rhs.minute)&&(second == rhs.second))
		 return true;
	 else
		 return false;
}

//operator< 
bool Date::operator< (const Date &rhs) {
     if(year > rhs.year)
		return false;
	else if(year < rhs.year)
		return true;

	else if(month > rhs.month)
		return false;
	else if(month < rhs.month)
		return true;

	else if(day > rhs.day)
		return false;
	else if(day < rhs.day)
		return true;

	else if(hour > rhs.hour)
		return false;
	else if(hour < rhs.hour)
		return true;

	else if(minute > rhs.minute)
		return false;
	else if(minute < rhs.minute)
		return true;
	else if(second >= rhs.second)
		return false;
	return true;
}

//operator<< 
ostream &operator<<(ostream& os, const Date& d) {
	os << d.getMonth() << "/" << d.getDay() << "/" << d.getYear()
		<< " " << d.getHour() << ":" << d.getMinute() << ":" << d.getSecond();

	return os;
}

//operator>> 
istream &operator>>(istream& is, Date& d)
{   int posn,posn1,posn2,posn3,posn4;
    int month,day,year;
	int hour,minute,second;

	string date_string;
	getline(is, date_string);
    
	posn = date_string.find_first_of("/", 0);
    month = atoi(date_string.substr(0, posn).c_str());
	d.setMonth(month);

    day = atoi(date_string.substr(posn + 1,date_string.find_last_of("/", 0)).c_str());
	d.setDay(day);

    posn1 = date_string.find_first_of("/", posn + 1) + 1;
	posn2 = date_string.find_first_of(" ", posn) + 1;
    year = atoi(date_string.substr(posn1, posn2).c_str());
	d.setYear(year);

	posn3 = date_string.find_first_of(":", posn2 + 1);
    hour = atoi(date_string.substr(posn2, posn3).c_str());
	d.setHour(hour);

    posn4 = date_string.find_first_of(":", posn3 + 1);
    minute = atoi(date_string.substr(posn3 + 1, posn4).c_str());
	d.setMinute(minute);

    second = atoi(date_string.substr(posn4 + 1, date_string.length()).c_str());
	d.setSecond(second);

    return is;
}