store filenames in an char array

[islanzadi]

hey

I try to read filenames in a directory and after store them in an char array.
My problem is that I can not store the filenames and I don't understand the error messages the compiler gives.
I'm new to C++ and I hope that someone can help me to correct my code:

#include <stdio.h>   
#include <stdlib.h>
#include <math.h>
#include <string.h>
#include <list>
#include <iostream>

#include <fstream>
#include <string>
#include <istream>
#include <sstream>
#include <dirent.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <string.h>

using namespace std;

int main(void)
{
  int j;
  int n_files;
  string temp_cin;
  
  cout << "number of files in the directory:" << flush;
  getline( cin, temp_cin);
  
  stringstream converted(temp_cin); // Converts the string 'temp_cin' into ??
  converted >> n_files;             // writes converted into n_files
  
  cout << n_files << endl;

  char* FilePath[n_files][40];

  int getFilename(char FilePath[n_files][40]);
  
  getFilename(FilePath[n_files][40]);
  
  while(j <= n_files-1)
  {
    cout << FilePath[j] << endl;
  }
 
  
  return 0;
}

int getFilename(char FilePath[][40])
{
  ifstream fin;
  string dir, filepath;
  int num;
  DIR *dp;
  struct dirent *dirp;
  struct stat filestat;
  string temp_cin;
  int n_files;
  int j=0;
  
  cout << "directory to get files of: " << flush;
  getline( cin, dir );  // gets everything the user ENTERs
  
  cout << "number of files in the directory:" << flush;
  getline( cin, temp_cin);
  
  stringstream converted(temp_cin); // Converts the string 'temp_cin' into ??
  converted >> n_files;             // writes converted into n_files
  
  cout << n_files << endl;
    
  dp = opendir( dir.c_str() );
  if (dp == NULL)
    {
    cout << "BAD" << endl;
    }

  while ((dirp = readdir( dp )))
    {
    filepath = dir + "/" + dirp->d_name;
    FilePath[j] = strcpy(filepath.c_str);
  
    // If the file is a directory (or is in some way invalid) we'll skip it 
    if (stat( filepath.c_str(), &filestat )) continue;
    if (S_ISDIR( filestat.st_mode ))         continue;

    // Endeavor to read a single number from the file and display it
    fin.open( filepath.c_str() );
    if (fin >> num)
      cout << filepath << ": " << num << endl;
    fin.close();
    
    cout << filepath << endl;
    j++;
    
    }

  closedir( dp );
  
  return 0;
}

I get the following error messages:
- at line 36: array bound is not an integer constant before >>]<< token
- argument of type >> const char* (std::basic_string<char>::)()const<< to >>char<< does not fit

Thanks islanzadi

[4z0M4iN6]

Line 36 is a prototype declaration. You need it, so that the compiler knows, that there exists a function GetFilename. There are two ways, so that the compiler can know:

- move function GetFilename before main
- use a prototype declaration

A prototype declaration you don't make inside a function;

Just move this line befor main.

[islanzadi]

Thanks

I tried it and the first error disappears but the second at line 81 remains.

[4z0M4iN6]

Do you think, you can copy a char array to a string with strcpy?

[islanzadi]

Acutally I've no idea. I'm new to C++ and I tried what I thought best. I'm not sure wheater this is possible and after reading the tutorial I'm not further therefore I posted my problem here.

[4z0M4iN6]

You could do it this way. Maybe there could be also some library function, but I didn't look.

for(int i = 0; array[i] != 0; i++) str += array[i];