std::chrono::month::ok

Since C++20

Checks if the month value stored in *this is in the valid range, i.e., [1,12].

# Declarations

constexpr bool ok() const noexcept;

(since C++20)

# Return value

true if the month value stored in *this is in the range [1,12]. Otherwise false.

# Example

#include <chrono>
#include <iostream>
 
int main()
{
    for (const unsigned mm : {6u, 0u, 16U})
    {
        std::cout << mm << ": ";
        const std::chrono::month m{mm};
        m.ok() ? std::cout << "month is valid\n"
               : std::cout << "month is invalid\n";
    }
}