Question

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.

Answer 1

You could do something like:

std::cerr << strerror(errno) << std::endl;

That still ends up calling strerror, so you’re really just substituting one C function for another. OTOH, it does let you write via streams, instead of mixing C and C++ output, which is generally a good thing. At least AFAIK, C++ doesn’t add anything to the library to act as a substitute for strerror (other than generating an std::string, I’m not sure what it would change from strerror anyway).