How to find out the date of the first day of week from the week number in C++

Using Howard Hinnant’s free, open-source, header-only date library, it can look like this: #include “date.h” #include “iso_week.h” #include <iostream> int main() { using namespace iso_week::literals; std::cout << date::year_month_day{2017_y/8_w/mon} << ‘\n’; std::cout << date::year_month_day{2017_y/10_w/mon} << ‘\n’; } which outputs: 2017-02-20 2017-03-06 There are also getters for year, month and day on the year_month_day types, and plenty … Read more