473,406 Members | 2,208 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,406 software developers and data experts.

Reading stdin from stdout of another application

Hi all. I am trying to set up a C++ program which will continuously
read stdin from another applications stdout. I will continue reading
until I read a message that will indicate to stop. Does anyone have
any ideas on how I can do this?

Thanks for responses.
Jul 19 '05 #1
1 4592
On 1/8/03 6:51 pm (UK time), Lisa C let loose these words:
Hi all. I am trying to set up a C++ program which will continuously
read stdin from another applications stdout. I will continue reading
until I read a message that will indicate to stop. Does anyone have
any ideas on how I can do this?


AFAIK, only the OS can control where stdin comes from.

In MS-DOS or Unix (don't know about other platforms), use a pipe

qwert | yuiop

will run qwert, the stdout of which becomes the stdin of yuiop.

Stewart.

--
My e-mail is valid but not my primary mailbox. Please keep replies on
on the 'group where everyone may benefit.

Jul 19 '05 #2

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

0
by: Bernhard Kuemel | last post by:
Hi! I want to read/write commands and program input to/from /bin/bash several times before I close the stdin pipe. However, reading from cat hangs unless I first close the stdin pipe. <?php...
4
by: Jan Knop | last post by:
Hello I am writing a Windows application where I need to redirect stdin, stdout and stderr from Python. to my application Is it a simple way of do it ? Has anyone done it using Winsock ?
5
by: Jean-Pierre Bergamin | last post by:
Dear python-Community We are forced to use a quite old simulation software that's based on Modula-2. The idea is now to let this software "talk" to the outside world over a TCP/IP network. ...
3
by: Mike Tammerman | last post by:
Hi, I want create a subprocess using Popen and pipe some input to it. Although everything works perfectly while executing python in, it doesn't work if I try with executables made by py2exe. ...
3
by: Fernando Arbeiza | last post by:
Hi: I need some clarification about a code like this: printf("%s", "a string with NO trailing newline"); scanf("%d", &i); Regarding if a fflush() of the standard output is needed or not. I...
7
by: gyan | last post by:
I want to read a line with white spaces though scanf. So i used: scanf("%",string); above is working in one program, but in other..what may be the reason?
1
by: asdsd sir | last post by:
Hi!I'm new in Python and i'd like to ask some general questions about stdin,stdout... Firstly... if we type like something like : cat "file.txt"|python somefile.py #somefile.py import sys
6
by: gregpinero | last post by:
Let's say I have this Python file called loop.py: import sys print 'hi' sys.stdout.flush() while 1: pass And I want to call it from another Python process and read the value 'hi'. How...
0
by: Gabriel Genellina | last post by:
En Thu, 25 Sep 2008 09:49:31 -0300, Almar Klein <almar.klein@gmail.com> escribió: Use subprocess.PIPE Usually the tricky part is to figure out exactly whether there is more input or not. With...
0
by: Charles Arthur | last post by:
How do i turn on java script on a villaon, callus and itel keypad mobile phone
0
by: emmanuelkatto | last post by:
Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel
1
by: Sonnysonu | last post by:
This is the data of csv file 1 2 3 1 2 3 1 2 3 1 2 3 2 3 2 3 3 the lengths should be different i have to store the data by column-wise with in the specific length. suppose the i have to...
0
by: Hystou | last post by:
There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...
0
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However,...
0
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can...
0
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven...
0
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows...
0
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.