#include <QTextStream>

#include <QDate>

int main(void) {

QTextStream out(stdout);

QList<QString> months;

months.append("January");

months.append("February");

months.append("March");

months.append("April");

months.append("May");

months.append("June");

months.append("July");

months.append("August");

months.append("September");

months.append("October");

months.append("November");

months.append("December");

QDate dt1 { 2020, 9, 18 };

QDate dt2 { 2020, 2, 11 };

QDate dt3 { 2020, 5, 1 };

QDate dt4 { 2020, 12, 11 };

QDate dt5 { 2020, 2, 29 };

out << "There are " << dt1.daysInMonth() << " days in "

<< months.at(dt1.month()-1) << endl;

out << "There are " << dt2.daysInMonth() << " days in "

<< months.at(dt2.month()-1) << endl;

out << "There are " << dt3.daysInMonth() << " days in "

<< months.at(dt3.month()-1) << endl;

out << "There are " << dt4.daysInMonth() << " days in "

<< months.at(dt4.month()-1) << endl;

out << "There are " << dt5.daysInMonth() << " days in "

<< months.at(dt5.month()-1) << endl;

out << "There are " << dt1.daysInYear() << " days in year "

<< QString::number(dt1.year()) << endl;

}