std::chrono::month::operator unsigned

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std::chrono::month
 
explicit constexpr operator unsigned() const noexcept;
(C++20 起)

返回 *this 存储的月份值。

返回值

*this 存储的月份值。

示例

运行此代码
#include <chrono>
#include <iostream>

int main()
{
    constexpr std::chrono::month m{6};
    constexpr unsigned p = static_cast<unsigned>(m);
    constexpr unsigned q = static_cast<unsigned>(std::chrono::September);
    std::cout << "The month is: " << p << '\n'
              << "September is: " << q << '\n'; 
}

输出： 

月份是: 6
September 是: 9