C++ files in directory

To show all files in a directory, you can run dir command from the system function (Dev-C++).
Example 1:
#include<iostream>
#include<fstream>
using namespace std;

int main(){
  
     system("dir D:\\*.*"); //show all files in drive D    
     system("PAUSE");
  
   return 0;
}

Example 2:
#include<iostream>
#include<fstream>
using namespace std;

int main(){
  
     system("dir D:\\*.txt"); //show all text files in drive D    
     system("PAUSE");
  
   return 0;
}

Another way is using opendir(const char *) and readdir(DIR*) functions.

#include<iostream>
#include<dirent.h>
using namespace std;

int main(){
   DIR *di=opendir("D:\\test"); //open the directory
   struct dirent *list;
   if(!di) { //checking whether the directory is opened successfully
       cout<<"The directory can not be opened.";
      return 1;
  }

  while(list=readdir (di)){ // read all files and sub-directories in the directory

    //show only the files
    DIR *d=opendir(list->d_name);
     if(!d) cout<<list->d_name<<endl;
   }

   closedir(di);

   system("PAUSE");
   return 0;
}

Posted by: Dara | post date: 02-12-2013 | Subject: C++ Programming Language




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