[C/C++][문제풀이] 달력 생성

연수와 월수를 입력하면 달력이 출력되는 프로그램을 작성하시오.

 조건:
1년 1월 1일은 월요일이다
4년마다 한 번씩 윤년(원래 2월은 28일까지지만, 윤년 때의 2월은 29일까지임)
그런데 100년마다는 윤년이 아님
그런데! 400년마다는 또 윤년임!
(따라서 300년은 윤년이 아니지만, 2000년은 윤년임)

 예)
연수를 입력하시오: 2006
월수를 입력하시오: 8

 일   월   화   수   목   금   토
              1     2    3    4    5
  6     7    8     9   10  11   12
13    14   15   16   17  18   19
20    21   22   23   24  25   26
27    28   29   30   31

문제 출처 : http://club.cyworld.com/club/main/club_main.asp?club_id=50588582 (정보보안 따라잡기)

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출력 화면

원본 소스 : http://blueb24.cafe24.com/source/calendar.zip

퍼가실땐 출처를 분명하게 해주세요.
그냥 연습, 학습용으로 퍼가는건 얼마든지 양보하지만, 자신이 짠 소스 마냥 버젓이 올라다니는거 보이는건 별로 제가 좋아하질 않네요.

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초 급조로 심심풀이 연습삼아 짜봤음.

Calendar.cpp

#include "stdafx.h" #include "CalendarManager.h" using namespace std; using namespace Calendar; int _tmain(int argc, _TCHAR* argv[]) { _Year year; _Month month; cout << "연월 입력 : "; cin >> year >> month; cout << "\n\t\t" << year << "년 " << month << "월\n" << endl; CalendarList list = CalendarManager::getSingleton().getCalendarData(year, month); for(Weekday week = WD_SUNDAY; week <= WD_SATURDAY; week = (Weekday)(week + 1)) { cout << CalendarManager::getSingleton().getStringWeekDay(week) << "\t"; } cout << endl; for(CalendarList::iterator it = list.begin(); it != list.end(); ++it) { if(it == list.begin()) { for(Weekday week = WD_SUNDAY; week != (*it)->first; week = (Weekday)(week + 1)) { cout << "\t"; } } cout << (unsigned int)(*it)->second << "\t"; if((*it)->first == WD_SATURDAY) { cout << endl; } } cout << endl; return 0; }

CalendarManager.h

#pragma once #include "Singleton.h" #include <utility> #include <list> #include <string> namespace Calendar { enum Weekday { WD_SUNDAY, WD_MONDAY, WD_TUESDAY, WD_WEDNESDAY, WD_THURSDAY, WD_FRIDAY, WD_SATURDAY }; typedef unsigned int _Year; typedef unsigned short _Month; typedef unsigned short _Day; typedef std::pair<Weekday, _Day> CalendarObject; typedef std::list<CalendarObject*> CalendarList; class CalendarManager : public Singleton<CalendarManager> { public: CalendarManager(void); virtual ~CalendarManager(void); CalendarList getCalendarData(_Year nYear, _Month nMonth); std::string getStringWeekDay(Weekday Week); private: void _updateCalendarList(); bool _compareEffectiveRange(_Year nYear, _Month nMonth); _Year _getLeapYear(); bool _IsLeapYear(_Year nYear); void _createCalendar(_Day nTotalDay); CalendarObject* _createObject(Weekday Week, _Day nDay); void _releaseMemory(); _Year m_nYear; _Month m_nMonth; CalendarList m_CalendarList; const Weekday m_StartDay; }; CalendarManager Singleton<CalendarManager>::m_Singleton; }

CalendarManager.cpp

#include "StdAfx.h" #include "CalendarManager.h" using namespace Calendar; CalendarManager::CalendarManager(void) :m_nYear(0) ,m_nMonth(0) ,m_StartDay(WD_MONDAY) { m_CalendarList.clear(); } CalendarManager::~CalendarManager(void) { _releaseMemory(); } CalendarList CalendarManager::getCalendarData(_Year nYear, _Month nMonth) { if(!_compareEffectiveRange(nYear, nMonth)) { m_nYear = 0; m_nMonth = 0; _releaseMemory(); } else { m_nYear = nYear; m_nMonth = nMonth; _updateCalendarList(); } return m_CalendarList; } std::string CalendarManager::getStringWeekDay(Weekday Week) { std::string strWeekday[] = { "일", "월", "화", "수", "목", "금", "토" }; return strWeekday[Week]; } void CalendarManager::_updateCalendarList() { _Year nLeapYear = _getLeapYear(); _Day nTotalDay = (m_nYear * 365) + nLeapYear; _createCalendar(nTotalDay); } bool CalendarManager::_compareEffectiveRange(_Year nYear, _Month nMonth) { bool bResult = true; if(nYear < 1 || nYear > 9999 || nMonth < 1 || nMonth > 12) { bResult = false; } return bResult; } _Year CalendarManager::_getLeapYear() { return (int)(m_nYear / 4) + (int)(m_nYear / 400) - (int)(m_nYear / 100); } bool CalendarManager::_IsLeapYear(_Year nYear) { bool bResult = false; if(m_nYear % 4 == 0 && (m_nYear % 100 != 0 || m_nYear % 400 == 0)) { bResult = true; } return bResult; } void CalendarManager::_createCalendar(_Day nTotalDay) { Weekday nStartWeekDay = (Weekday)((m_StartDay + nTotalDay) % (WD_SATURDAY + 1)); _Day nDay; switch(m_nMonth) { case 2: nDay = (_IsLeapYear(m_nYear)) ? 29 : 28; break; case 1: case 3: case 5: case 7: case 8: case 10: case 12: nDay = 31; break; case 4: case 6: case 9: case 11: nDay = 30; break; default: nDay = 0; } for(_Day i = 0; i < nDay; ++i) { Weekday WeekDay = (Weekday)((nStartWeekDay + i) % (WD_SATURDAY + 1)); m_CalendarList.push_back(_createObject(WeekDay, i + 1)); } } CalendarObject* CalendarManager::_createObject(Weekday Week, _Day nDay) { CalendarObject* pObject = new CalendarObject(Week, nDay); return pObject; } void CalendarManager::_releaseMemory() { CalendarList::iterator it; for(it = m_CalendarList.begin(); it != m_CalendarList.end(); ++it) { delete *it; *it = NULL; } m_CalendarList.clear(); }

Singleton.h

#include "stdafx.h" #include <iostream> using namespace std; namespace Calendar { template <class T> class Singleton { protected: static T m_Singleton; public: Singleton() { } virtual ~Singleton() { } static T& getSingleton() { return m_Singleton; } static T* getSingletonPtr() { return &m_Singleton; } }; }