void Date::settm(
int aDay,
int aMonth,
int aYear,
int aSecond
)
throw( DateException )
{
if( aMonth > 11 )
throw DateException( "Out of range for month" );
if( aDay > getDaysInMonth( aMonth, aYear ) )
throw DateException( "Out of range for day" );
if( aSecond > 86400 )
throw DateException( "Out of range for seconds" );
Time.tm_sec = aSecond % 60;
Time.tm_min = aSecond / 60;
Time.tm_hour = aSecond / 3600;
Time.tm_mday = aDay;
Time.tm_mon = aMonth;
Time.tm_year = aYear - 1900;
int centuryNumber;
/* Formula for calculating the day of the week */
/* d + m + y + (last 2 digits of year) / 4 + c */
/* d = day, m = month, y = year, c = century number */
/* the century number is 6 if the two significant */
/* digits of the year are divisible by 4, then the */
/* subsequent centuries are 4, 2, 0. */
/* ( 2000 => 6, 2100 => 4, 2200 => 2, 2300 => 0 ) */
/* check out wiki: "Determination of the day of the week" */
centuryNumber = 6 - ( ( aYear / 100 ) % 4 );
Time.tm_wday = ( aDay + aMonth + aYear + ( ( aYear % 100 ) / 4 ) + centuryNumber ) % 7;
/* To get the day in the year, add the number of */
/* days in each month before the current month */
/* then add the day of the current month to that */
/* total. */
int yday = 0;
for( int i = 0; i < aMonth; ++i )
{
yday += getDaysInMonth( i, getYear() );
}
yday += aDay;
Time.tm_yday = yday;
/* I don't want to worry about day light savings */
Time.tm_isdst = -1;
} /* end Date::init() */
int main(int argc, uint8_t *argv[])
{
uint64_t year, dayOfMonth, daysInMonth, sundays;
month_t monthOfYear;
/**
* 1900-01-01 is a Monday.
*/
week_day_t weekDay = MON;
dayOfMonth = 1;
sundays = 0;
for (year = 1900; year <= 2000; year++) {
for (monthOfYear = JAN; monthOfYear < MONTHS_IN_YEAR; monthOfYear++) {
daysInMonth = getDaysInMonth(year, monthOfYear);
for (dayOfMonth = 1; dayOfMonth <= daysInMonth; dayOfMonth++) {
weekDay = (weekDay + 1) % DAYS_IN_WEEK;
if (year > 1900 && dayOfMonth == 1 && weekDay == SUN) {
sundays += 1;
}
}
}
}
printf("Sundays: %" PRIu64 "\n", sundays);
return 0;
}
int main (int argc, char *argv[]) {
int leapYear;
int doomsday;
int month;
int daysInMonth;
int day;
int dayOfWeek;
//get leap and non-leap years
for (leapYear = 0; leapYear < 2; leapYear++) {
// get doomsdays for each day of the week
for (doomsday = 0; doomsday < 7; doomsday++) {
// for every month
for (month = 1; month <= 12; month++) {
daysInMonth = getDaysInMonth (leapYear, month);
// for each day of the month print an assert
for (day = 1; day <= daysInMonth; day++) {
dayOfWeek = getDayOfWeek (leapYear, doomsday,
month, day, dayOfWeek);
printAssert(leapYear, doomsday,
month, day, dayOfWeek);
}
}
}
}
return EXIT_SUCCESS;
}
unsigned int getDayCountUpToMonthWithYear(unsigned int month, unsigned int year) {
const bool ly = isLeapYear(year);
int days = 0;
while (--month > 0)
days += getDaysInMonth(month, ly);
return days;
}
void Date::adjustDay(
int aAmount
)
throw( DateException )
{
int addDays = aAmount + getDay();
int daysInMonth = getDaysInMonth( getMonth(), getYear() );
while( addDays >= daysInMonth )
{
adjustMonth( 1 );
addDays = addDays - daysInMonth;
/* month should have been moved up 1 */
daysInMonth = getDaysInMonth( getMonth(), getYear() );
}
setDay( addDays );
} /* end Date::adjustDay() */
time_t getEndOfMonth(const time_t& rawtime)
{
struct tm * timeInfo = localtime(&rawtime);
timeInfo->tm_sec = 59;
timeInfo->tm_min = 59;
timeInfo->tm_hour = 23;
timeInfo->tm_mday = getDaysInMonth(rawtime);
timeInfo->tm_isdst = -1;
return mktime(timeInfo);
}
int calculateDayOfYear2() {
setDate2();
int i = 0;
int endMonth = date2[0];
int endDay = date2[1];
int days;
for (i = 0; i < endMonth; i++) {
days = getDaysInMonth(i) + days;
}
int totalDays = days + endDay;
return totalDays;
}
int main()
{
// 0 - Monday, 1 - Tuesday, ... , 6 - Sunday
int dayOfWeek = 365 % 7;
int sum = 0;
for (int year = 1901; year <= 2000; year++)
{
for (int month = 0; month < 12; month++)
{
// Increase sum if the first day of the month is Sunday.
if (dayOfWeek == 6)
sum++;
// Goto the next month.
dayOfWeek = (dayOfWeek + getDaysInMonth(month, year)) % 7;
}
}
std::cout << sum << '\n';
}
//! Function to create the calendar date from the year and the number of days in the year
boost::gregorian::date convertYearAndDaysInYearToDate( const int year, const int daysInYear )
{
// Go to day 1 at 01-01 convention
int daysLeft = daysInYear + 1;
// Loop over all months (starting at January until month in which daysinYear is situated is found)
int currentMonth = 1;
int daysInCurrentMonth;
bool isConverged = 0;
while( !isConverged )
{
// Determine days in current month
daysInCurrentMonth = getDaysInMonth( currentMonth, year );
if( daysInCurrentMonth < daysLeft )
{
// Subtract days in current month from days left.
daysLeft -= daysInCurrentMonth;
// Update month and check consistency
currentMonth++;
if( currentMonth > 12 )
{
std::cerr<<"Error when converting year and days in year to date, month number has exceeded 12"<<std::endl;
}
}
else
{
isConverged = 1;
}
}
// Create date and return
boost::gregorian::date date( year, currentMonth, daysLeft );
if( date.day_of_year( ) != daysInYear + 1 )
{
std::cerr<<"Error when converting year and days in year to date, inconsistent output"<<std::endl;
}
return date;
}
int calculateTotalDaysBetween() {
int counter =0;
setDate1();
setDate2();
int y = date1[2];
int d = date1[1];
int m = date1[0];
int flag = 0;
int dm;
do {
for (m = date1[0]; m <= 11; m++) {//while the current month is less than or equal to twelve
dm = getDaysInMonth(m); // get the amount of days in this current month
for (d = date1[1]; d <= dm; d++) { // while the current day is less than days in month
date1[1] = d;
date1[0] = m;
date1[2] = y;
counter++;
if ((date2[0] == m)&&(date2[1] == d)&&(date2[2] == y)) { // if the amount of days we are calculating to is reached,
flag = 1; //set the flag value to 1 and break
break;
}
}
if (flag == 1) { // upon exiting inner loop check if the exit is due to amount of days reached
flag = 2; // if so set flag value to 2
break;
}
date1[1] = 1;
d = 1;
}
if (flag == 2) { // upon exiting outer loop check if the exit is due to amount of days reached
break; // if so, break
}
y++;
date1[0] = 0;
m = 0; //set month back to 0, increment year
}
while (!(date1[0] == date2[0])&&!(date1[1] == date1[2])&&!(date1[2] == date2[2]));
return counter;
}
void calculateCalendarDate() {
setDate1();
int daysFrom = getNumber();
int y = date1[2];
int d = date1[1];
int m = date1[0]; //gets start month
int flag = 0;
int counter = 0;
int dm;
while (counter <= daysFrom) {
for (m = date1[0]; m <= 11; m++) {//while the current month is less than or equal to twelve
dm = getDaysInMonth(m); // get the amount of days in this current month
for (d = date1[1]; d <= dm; d++) { // while the current day is less than days in month
date1[1] = d;
date1[0] = m;
date1[2] = y;
counter++;
if (counter > daysFrom) { // if the amount of days we are calculating to is reached,
flag = 1; //set the flag value to 1 and break
break;
}
}
if (flag == 1) { // upon exiting inner loop check if the exit is due to amount of days reached
flag = 2; // if so set flag value to 2
break;
}
date1[1] = 1;
d = 1;
}
if (flag == 2) { // upon exiting outer loop check if the exit is due to amount of days reached
break; // if so, break
}
y++;
date1[0] = 0;
m = 0; //set month back to 0, increment year
}
}
void Months::SetYM(int year, int month){
itsYear = year;
itsMonth = month;
itsMaxDay = getDaysInMonth(year, month);
}
int main(int argc, const char* argv[])
{
if(argc < 2)
{
printError();
return 0;
}
int iMonth = 0;
int iYear = 0;
sscanf(argv[1], "%d.%d", &iMonth, &iYear);
if(iYear <= 1900 || iMonth > 12 || iMonth <= 0)
{
printError();
return 0;
}
// Set environment's default locale
setlocale(LC_ALL, "");
// Init console colors
HANDLE hstdout = GetStdHandle(STD_OUTPUT_HANDLE);
CONSOLE_SCREEN_BUFFER_INFO csbi;
GetConsoleScreenBufferInfo( hstdout, &csbi );
int iFirstWeekDay = getFirstDayOfWeek();
int iMonthStartWeekDay = getMonthStartDay(iYear, iMonth);
int iDaysInMonth = getDaysInMonth(iYear, iMonth);
wchar_t Buf[255];
int iRow = 0;
bool bFillCalendar = false;
int iCurrentWeekDay = iFirstWeekDay;
int iCurrentMonthDay = 1;
while(iCurrentMonthDay <= iDaysInMonth)
{
iCurrentWeekDay = iFirstWeekDay;
for(int i = 0; i < 7; i++)
{
if(iRow == 0)
{
// Setting white color on black background
SetConsoleTextAttribute(hstdout, 0xF0);
GetLocaleInfo(LOCALE_USER_DEFAULT, LOCALE_SABBREVDAYNAME1 + iCurrentWeekDay, Buf, 255);
wprintf(L"%4.3ls ", Buf);
}
else if(iRow == 1)
{
// Setting white color on black background
SetConsoleTextAttribute(hstdout, 0x7F);
if(iMonthStartWeekDay == iCurrentWeekDay)
{
bFillCalendar = true;
}
}
// Filling blank space before and after selected month
if(!bFillCalendar && iRow != 0)
{
wprintf(L"%5s", " ");
}
if(bFillCalendar)
{
// Setting days color
if(iCurrentWeekDay == 5 || iCurrentWeekDay == 6)
{
// Sundays and saturdays are light red!
SetConsoleTextAttribute(hstdout, 0x7C);
}
else
{
// Other days are white
SetConsoleTextAttribute(hstdout, 0x71);
}
if(isToday(iYear, iMonth, iCurrentMonthDay))
{
// Printing "today" in the brackets
swprintf(Buf, L"[%2d]", iCurrentMonthDay);
wprintf(L"%5.4s", Buf);
}
else
{
wprintf(L"%4d ", iCurrentMonthDay);
}
iCurrentMonthDay++;
if(iCurrentMonthDay > iDaysInMonth)
{
bFillCalendar = false;
}
}
if(iCurrentWeekDay == 6)
{
iCurrentWeekDay = 0;
}
else
{
iCurrentWeekDay++;
}
}
SetConsoleTextAttribute(hstdout, csbi.wAttributes);
wprintf(L"\r\n");
iRow++;
}
printf("Press any key to continue...");
getch();
return 0;
}
