How to find out if a folder exists and how to create a folder?

Question

I'm trying to create a folder if it doesn't exist. I'm using Windows and I am not interested on my code working in other platforms.

Never mind, I found the solution. I was just having a inclusion problem. The answer is:

#include <io.h>   // For access().
#include <sys/types.h>  // For stat().
#include <sys/stat.h>   // For stat().
#include <iostream>
#include <string>
using namespace std;

string strPath;
   cout << "Enter directory to check: ";
   cin >> strPath;

   if ( access( strPath.c_str(), 0 ) == 0 )
   {
      struct stat status;
      stat( strPath.c_str(), &status );

      if ( status.st_mode & S_IFDIR )
      {
         cout << "The directory exists." << endl;
      }
      else
      {
         cout << "The path you entered is a file." << endl;
      }
   }
   else
   {
      cout << "Path doesn't exist." << endl;
   }

Seriously? Your initial question had no code fragment, and this code does not reflect the question. It was more of a "What's wrong with my code [that I didn't post]?" — Andy Finkenstadt, Apr 11 '11 at 13:33

score 13 · Accepted Answer · answered Apr 11 '11 at 13:25

13

The POSIX-compatible call is mkdir. It silently fails when the directory already exists.

If you are using the Windows API, then CreateDirectory is more appropriate.

answered Apr 11 '11 at 13:25

Andy Finkenstadt

3,547
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score 13 · Answer 2 · answered Apr 11 '11 at 13:25

13

Use boost::filesystem::exists to check if file exists.

answered Apr 11 '11 at 13:25

Alexey Malistov

26,407
13
68
88

score 12 · Answer 3 · answered Apr 11 '11 at 13:47

12

boost::filesystem::create_directories does just that: Give it a path, and it will create all missing directories in that path.

answered Apr 11 '11 at 13:47

Mephane

1,984
11
18

Searching on Google for `boost check directory exists then create C++` brought me here as the first search result. Thanks. +1. – rayryeng Jul 08 '17 at 01:05

How to find out if a folder exists and how to create a folder?

3 Answers3

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