资料来源 : Free On-Line Dictionary of Computing

fprintf
     
         Variant of the {C} library routine {printf} which
        prints to a given {stream}.  E.g.
     
        	fprintf(stderr, "%s: can't open file \"%s\".",
        		argv[0], argv[1]);
     
        which prints to the "{standard error}" output stream.
     
        (1995-04-25)