• jicman (25/25) Mar 23 2005 Greetings!
• Walter (6/6) Mar 23 2005 Output going to the console is flushed every time a \n is written. If th...
• jicman (3/9) Mar 24 2005 Yeah, but I don't use printf. :-) Ok, thanks.
• Carlos Santander B. (4/22) Mar 24 2005 After writef will also work.

jicman <jicman_member pathlink.com> writes:

Greetings!

Let us imagine that I have a program call prog.exe.  When I run that program I
get some output on the screen and then it goes and grabs a bunch of xml from a
server and does some things.  While grabbing all of these xml data, there is a
big pause, but nonetheless, the are headings and information printed before this
pause.  For example

<example out>
c:\> prog.exe arg1 arg2 arg3
Program Version 1.0.19
Login on to server arg1
Login on using user arg2
Date: <%date%>
Blah blah blah

Waiting for data from arg1...

</example out>

Ok, so this shows right away after running the program.  but if I run the same
command above and I want the output to go to a file, i.e.

c:\> prog.exe arg1 arg2 arg3 > out.txt

that information is kept for a while and later flushed with more data.  The
question is:

1.  Is this Windows or D?  (I know it's probably waiting for a certain amount of
bytes to write it to the file, but is this Windows or D?)  I have an idea, but I
want you smart-a-lics to take me to the promised land.

thanks,

josé

"Walter" <newshound digitalmars.com> writes:

Output going to the console is flushed every time a \n is written. If the
output is going to a file, it is flushed whenever the default file buffer
gets filled up.

But you can force a flush by adding:
    std.c.stdio.fflush(stdout);
after a printf.

jicman <jicman_member pathlink.com> writes:

Walter says...
Output going to the console is flushed every time a \n is written. If the
output is going to a file, it is flushed whenever the default file buffer
gets filled up.

This is the OS file buffer, right?  Not D's, correct?

But you can force a flush by adding:
    std.c.stdio.fflush(stdout);
after a printf.

Yeah, but I don't use printf. :-)  Ok, thanks.

"Carlos Santander B." <csantander619 gmail.com> writes:

jicman wrote:
 Walter says...
 
Output going to the console is flushed every time a \n is written. If the
output is going to a file, it is flushed whenever the default file buffer
gets filled up.

 
 
 This is the OS file buffer, right?  Not D's, correct?
 
 
But you can force a flush by adding:
   std.c.stdio.fflush(stdout);
after a printf.

 
 
 Yeah, but I don't use printf. :-)  Ok, thanks.
 
 

After writef will also work.


_______________________
Carlos Santander Bernal