无法在 Visual Studio 中打开源文件 err.h？

Question

When I run my program on a mac it works just fine, but when I do it using Visual Studio I get this error:

Cannot open source file err.h

Is there another way to handle errors in Visual studio or am I not calling correctly?

 #include <err.h>   

Here's How I'm trying to use err in my code:

switch (select(1, &readfds, NULL, NULL, &tmo)) {
    case -1:
        err(1, "select"); // This throw an error
        break;
    case 0:
        printf("You did not enter your password within 5 seconds\n");
        return (1);
        break;
}

Answer 1

The entire <err.h> (with err() , errx() , warnx , etc.) is, actually, a BSD-thing, @EdHeal.

Linux adopted it -- smartly. Microsoft hasn't -- foolishly. Along with the <sysexits.h> this is an extremely handy API for proper command-line utilities.

If you only have a single err() call in the program, you can replace it with something like:

    #include <errno.h>
    #include <stdio.h>
    #include <string.h>
    ...
    fprintf(stderr, "%s: select: %s\n", argv[0], strerror(errno));
    exit(1)`.