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write  to a process

Posted on 2004-04-08
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Last Modified: 2010-04-22
sir ,

mkdir rath
 will create a directory  .
with out using system() ,i hve to  
make a directory called xxx

 ie
     int  main(int argc ,char *argv[])
     {
     }
i  hve to pass directory name as an argument.
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Question by:karana
9 Comments
 
LVL 12

Expert Comment

by:stefan73
ID: 10783345
Hi karana,
Like this:

int main(int argc,char** argv){
    if(argc!=2){
        [error... not exactly one argument]
    }

    mkdir(argv[0]);
}

Cheers,
Stefan
0
 
LVL 12

Accepted Solution

by:
stefan73 earned 50 total points
ID: 10783350
> mkdir(argv[0]);
...should read
mkdir(argv[1]);

argv[0] is the program name itself, not the first argument.

Stefan
0
 

Author Comment

by:karana
ID: 10791529
sir ,

 i  hve to use popen()
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Expert Comment

by:ray_pro2
ID: 10794355
If you intension is just creation of the directory 'xxx', add this line to the body of your main( ):

mkdir(argv[1]);

--supply the directory name as the first argument in the command line following the program name, while running the program.
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LVL 12

Expert Comment

by:stefan73
ID: 10822623
karana,
> popen()
popen is very similar to system, it also has a full shell:

FILE* f=popen("mkdir your_dir","r");
/* Now you can parse mkdir's stdout via freads from f. But as mkdir is mute, not much use here */
pclose(f);

You could parse mkdirs stderr by redirecting it:
FILE* f=popen("mkdir your_dir 2>&1","r");

Then you can catch errors.

Stefan
0
 
LVL 12

Expert Comment

by:stefan73
ID: 10822633
karana,
You have tons of open old questions - please close them.

Stefan
0
 
LVL 1

Expert Comment

by:fyf7262284
ID: 10934795
ok!the function of "mkdir" is right to you!
"man 2 mkdir"
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