Namespaces
Variants

std::chrono::year_month_weekday_last:: year, std::chrono::year_month_weekday_last:: month, std::chrono::year_month_weekday_last:: weekday, std::chrono::year_month_weekday_last:: weekday_last

From cppreference.net
C++
Date and time library
std::chrono::year_month_weekday_last
constexpr std:: chrono :: year year ( ) const noexcept ;
(1) (C++20 起)
constexpr std:: chrono :: month month ( ) const noexcept ;
(2) (C++20 起)
constexpr std:: chrono :: weekday weekday ( ) const noexcept ;
(3) (C++20 起)
constexpr std:: chrono :: weekday_last weekday_last ( ) const noexcept ;
(4) (C++20 起)

获取存储在此 year_month_weekday_last 对象中的字段值。

返回值

1) 返回存储的 std::chrono::year 值。
2) 返回存储的 std::chrono::month 值。
3) 返回存储的 std::chrono::weekday 值。
4) std:: chrono :: weekday_last ( weekday ( ) )

示例

运行此代码 
#include <chrono>
#include <iostream>
using namespace std::chrono;
int main()
{
    auto ymwdl{Tuesday[last]/November/2022};
    auto wdl = ymwdl.weekday_last();
    wdl = (wdl.weekday() + days(1))[last];
    ymwdl = {ymwdl.year() + years(1), ymwdl.month() - months(2), wdl};
    std::cout << year_month_day(ymwdl) << '\n';
}

输出： 

2023-09-27