Solved

disable cout buffering

Posted on 1997-06-10
4
1,172 Views
Last Modified: 2012-06-27
How can I disable the buffering of output from cout?

Thank you!
0
Comment
Question by:paulchen
  • 2
4 Comments
 
LVL 4

Accepted Solution

by:
md041797 earned 50 total points
ID: 1163881
use:

cout.setf (ios::unitbuf, 0);

This forces a buffer of 1 char, which is actually no buffer at all.


0
 

Author Comment

by:paulchen
ID: 1163882
hello md!

thank you for your answer.
unfortunately, it didn't work. it still gets all buffered and
output after program termination.

0
 
LVL 4

Expert Comment

by:md041797
ID: 1163883
I've never seen this before.  What platform/compiler?

BTW, I recall that cout is unitbuf by default.
0
 
LVL 2

Expert Comment

by:sprinkmeier
ID: 1163884
Does "cerr" behave like you want it to (ie. unbuffered?) If it does not, then the problem could be with the OS, not the libraries you are using. (cerr is tied to fd 2 (stderr) instead of fd 1 (stdout) and is supposed to be unbuffered, though both are based the same parent class (as far as I know, may be implementation dependant)).

"clog" is supposed to be an unbuffered "cerr".
How do they do it? (tracking this doen might help)
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

When writing generic code, using template meta-programming techniques, it is sometimes useful to know if a type is convertible to another type. A good example of when this might be is if you are writing diagnostic instrumentation for code to generat…
Basic understanding on "OO- Object Orientation" is needed for designing a logical solution to solve a problem. Basic OOAD is a prerequisite for a coder to ensure that they follow the basic design of OO. This would help developers to understand the b…
The viewer will learn how to pass data into a function in C++. This is one step further in using functions. Instead of only printing text onto the console, the function will be able to perform calculations with argumentents given by the user.
The viewer will be introduced to the technique of using vectors in C++. The video will cover how to define a vector, store values in the vector and retrieve data from the values stored in the vector.

840 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question