I know we can use
perror()
in C to print errors. I was just wondering if there is a C++ alternative to this, or whether I have to include this (and therefore stdio.h) in my program. I am trying to avoid as many C functions as possible.
3 Answers
With C++11, we have the <system_error> header, so you should be able to use:
std::error_code{errno, std::generic_category()}.message();
Example program:
#include <system_error>
#include <iostream>
int main() {
std::cout << std::error_code{errno, std::generic_category()}.message() << '\n';
}
This prints Success.
See also:
- How to convert errno to exception using <system_error>
- <system_error> categories and standard/system error codes
(regarding whether to usegeneric_categoryorsystem_category)
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