create a directory in C++

poeta_boy · 06-27-2004, 11:11 PM

hello:

I'm using ofstream to create a file and write on it, however I'd like also to create a directory and there to put the file.... will ofstream create the dir automatically if I do:

ofstream file("c:/dir/file.dat", ios :: out);

thanks for your help!!!

Poeta

nimra · 06-28-2004, 10:50 AM

It's really not a good solution, but you can make use of the system statement...

Code:

system("mkdir <path>\<dir>");

Dergro · 06-28-2004, 10:57 AM

You can use mkdir(2)

Code:

int
mkdir(const char *path, mode_t mode);

poeta_boy · 06-29-2004, 04:02 PM

the mkdir prototipe is included in which library?

thanks

keefaz · 06-29-2004, 04:23 PM

#include <sys/stat.h>
#include <sys/types.h>

do man 2 mkdir for more infos

[edit]
Forget it, I did not see you program in windows platform

poeta_boy · 06-29-2004, 10:07 PM

thanks a lot, but I do need it for windows

poeta_boy · 07-01-2004, 12:43 AM

I've managed to do it... or almost:

I have this string:

string path; // have to convert it to char* so it's usable

char *temp = new char[path.length());

for(int i = 0; i < path.length(); i++)
temp[i] = path[i];

now, after including direct.h

_mkdir(temp);

and that would be it.... however, lets say the original string contains:

path = "C:/file";

after the convertion to char* I get:

C:/fil═²²²²

why is that happening? the new dir C:/fil═²²²² does appear....

Thanks a lot!

(My post number 100th!!!)

keefaz · 07-02-2004, 07:15 AM

Did you try :
_mkdir( path.c_str() );
?

poeta_boy · 07-02-2004, 09:10 AM

thanks a lot, actually I had to copy each char with a for loop, but now I added the 0 char at the end and it worked just fine.. I didn't know of that
c_str() thing but I'll use now

Thanks!

sharky · 11-02-2011, 12:32 PM

Is it really that difficult to make a directory with c++ in Linux? After reading all this I still don't have a clue and I can't get anything to work.

I'm using g++ 3.4.6. If I want to create a directory in the local run directory call 'buzz' how do I do it without using a system call?

SigTerm · 11-02-2011, 12:56 PM

Quote:

Originally Posted by sharky

Is it really that difficult to make a directory with c++ in Linux? After reading all this I still don't have a clue and I can't get anything to work.

I'm using g++ 3.4.6. If I want to create a directory in the local run directory call 'buzz' how do I do it without using a system call?

Please refrain from using necromancy on the forums. This thread is 7 years old.

C++ does not have function for making a directory, because "directory" is a feature of operating system, and C++ is cross-platform. Function for making a directory is normally provided by operating system.
In case of linux the function could be easily found if you actually tried to read the manual.

NevemTeve · 11-02-2011, 01:04 PM

Quote:

Originally Posted by sharky

Is it really that difficult to make a directory with c++ in Linux? After reading all this I still don't have a clue and I can't get anything to work.

Re-read it again, you will find these:
man 2 mkdir
mkdir ("buzz", 0755);

sharky · 11-02-2011, 01:24 PM

Quote:

Originally Posted by SigTerm

Please refrain from using necromancy on the forums. This thread is 7 years old.

C++ does not have function for making a directory, because "directory" is a feature of operating system, and C++ is cross-platform. Function for making a directory is normally provided by operating system.
In case of linux the function could be easily found if you actually tried to read the manual.

It came up on a search. Thanks for the help.

sharky · 11-02-2011, 01:28 PM

This is what worked for me.

Quote:

string PROJ;
getline (cin, PROJ);
const char * cPROJ = PROJ.c_str();
mkdir(cPROJ,0750);

The key was converting the string to char.

This also worked.

Quote:

string PROJ;
getline (cin, PROJ);
mkdir(PROJ.c_str(),0750);

Sorry for the "necromancy" but why does it matter?

sharky · 11-02-2011, 01:30 PM

Quote:

Originally Posted by NevemTeve

Re-read it again, you will find these:
man 2 mkdir
mkdir ("buzz", 0755);

Thanks,