#include <iostream>
#include <iomanip>
 
//1900/1/1 as monday??
 
int LastDayOfMonth(int Month, bool IsLeap = false){
 
	if (1 > Month || Month > 12) return -1;
 
	if (Month == 2){
		if (IsLeap == true) return 29;
		return 28;
	}
 
	if (Month == 4)return 30;
	if (Month == 6)return 30;
	if (Month == 9)return 30;
	if (Month == 11)return 30;
 
	return 31;
}
 
bool IsLeapYear(int Year){
	return (Year % 4) == 0 && (Year % 100) != 0 || (Year % 400) == 0;//from wikipedia jp @2014
}
 
int ElapsedDayByYear(int year){
	if (year < 0)return -1;
 
	std::size_t Day = 0;
 
	for (int i = 1900; i < year; i++){
		Day += 365;
		if (IsLeapYear(i) == true)Day++;
	}
 
	return Day;
}
int ElapsedDayByMonth(int Year, int Month){
	int Day = 0;
 
	for (int i = 1; i < Month; i++){
		Day += LastDayOfMonth(i, IsLeapYear(Year));
	}
 
	return Day;
}
 
bool ShowCalender(int Year, int Month){
	int DOTW = (ElapsedDayByYear(Year) + ElapsedDayByMonth(Year,Month))%7;
	int Day = LastDayOfMonth(Month, IsLeapYear(Year));
	char *Name[] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
 
	for (int i = 0; i <7; i++)std::cout << std::setw(3) << std::right << Name[i]<< ' ';
	std::cout << std::endl;
	for (int i = 0; i <= DOTW; i++){
		if (DOTW == 6)break;
		std::cout << std::setw(3) << std::right << ' ' << ' ';
	}
	for (int i = 0; i < Day; i++){
		std::cout << std::setw(3) << std::right << i+1<< ' ';
		if ((DOTW + i) % 7 == 5) std::cout << std::endl;
	}
	std::cout << std::endl;
	return true;
 
}
 
int main(){
 
	int Year = 2014;
 
	for (int i = 1; i <= 12; i++){
		std::cout << '['<<Year << "/" << i<<']'<<std::endl;
		ShowCalender(Year, i);
		std::cout << std::endl;
	}
 
	return 0;
}

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