function/write_global —
global variables and constants
- Write a SYNOPSIS describing:
- The
err() function defined in
<err.h>
taking a variable number of arguments where he first is an integer
exit(3)
value and the second a format string as accepted by
printf(3).
This function does not return.
- The global integer variable errno
defined in
<errno.h>.
- The first few of the values the error variable can take, EPERM=1,
ENOENT=2, ESRCH=3, EINTR=4.
- How would you mark up the following sentence in the DESCRIPTION?
If the variable errno hat the value ENOENT, the
function err() prints the message "No such file or
directory".
Note: In a real system, those features would probably not be documented in the
same manual page, and there are too many error numbers to list them all in the
SYNOPSIS, so they would more likely be documented in the DESCRIPTION.
- Introduction:
SYNOPSIS
section for library functions
- The MACRO OVERVIEW section of the
mdoc(7)
manual.
html —
mdoc