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/* FERRORF.C
** Prints error message with printf() formatting syntax, then a colon,
** then a message corressponding to the value of errno, then a newline.
** Output is to filehandle.
**
** Public Domain by Mark R. Devlin, free usage is permitted.
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
int ferrorf(FILE *filehandle, const char *format, ...)
{
int vfp, fp;
va_list vargs;
vfp = fp = 0;
va_start(vargs, format);
vfp = vfprintf(filehandle, format, vargs);
va_end(vargs);
fp = fprintf(filehandle, ": %s\n", sys_errlist[errno]);
return ((vfp==EOF || fp==EOF) ? EOF : (vfp+fp));
}
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