IIRC stdout is buffered by default and stderr is not. Barry Lake wrote: > > At 3:16 AM -0600 11/21/00, Dennis Handly wrote: > >Barry Lake ([log in to unmask]) wrote: > >: is to change all printf("whatever") calls to fprintf(stdout, "whatever"). > >: This seems to force the output to be written immediately... > > > >Did you mean stderr? Otherwise they should be the same. > > You know, I usually do code things with fprintf(stderr,...). > However, when I was replying to the original post, I whipped out a quick > "Hello World" program to verify that what I was going to post would be > correct. In that program I guess I spaced and used fprintf(stdout,...), > which seemed to work, so that's what I posted. Is there really a functional > difference between stdout and stderr? (I know about ">" and "2>" > redirection in shell scripts, but this started as an MPE programming > problem, I think.) Isn't buffering handled the same way for stdout and > stderr?