gcc: run several programs in background at same time with system or whatever exec ?

frenchn00b · 04-26-2009, 05:17 PM

First I compile with this:

Code:

gcc start.c -o start

then second:
my code but still not working?
I would like 3 notepad to be opened at same time ...

Code:

#include <stdlib.h>
#include<stdio.h>

int main()
{
(void)system("notepad.exe");
return(0);
(void)system("notepad.exe");
return(0);
(void)system("notepad.exe");
return(0);
}

Result: Only a single Notepad appears

In any case, someone knows, how can I pass a parameter to my start.exe ?

Quote:

#include <stdlib.h>
#include<stdio.h>

int main()
{
execlp("notepad.exe $1", 1);
execlp("notepad.exe $1", 1);
execlp("notepad.exe $1 ", 1);
}

not workiding either

Hko · 04-26-2009, 05:29 PM

The system() function waits until the program (notepad.exe in this case) exits. Then your program continues.

On Linux, a quick&dirty way to fix this is to put an apersand (&) at the end of the command line: system("notepad.exe&");.

Or use fork() and one of the exec system calls (execlp() being the easiest probably).

But I think both of these ways will not work on windows(tm). I don't know how it should be done there.

frenchn00b · 04-26-2009, 05:35 PM

Quote:

Originally Posted by Hko

The system() function waits until the program (notepad.exe in this case) exits. Then your program continues.

On Linux, a quick&dirty way to fix this is to put an apersand (&) at the end of the command line: system("notepad.exe&");.

Or use fork() and one of the exec system calls (execlp() being the easiest probably).

But I think both of these ways will not work on windows(tm). I don't know how it should be done there.

thank you anyhow

And also I get several CMD boxes open if I run several START.EXE. it is full in my taskbar

Cant I hide them somehow?
http://www.skyuser.co.uk/images/tutorials/cmd/cmd1.gif

And for winword, is there a way to call another program into the already running winword? not starting another one?

Is there a jedi master of GCC somewhere here

?

thanks a lot!

tuxdev · 04-26-2009, 06:26 PM

You want one of the _spawn family of functions
http://msdn.microsoft.com/en-us/libr...d2(VS.80).aspx