How to browse through folders

[Dee5]

Hello, sorry but I need help on how to browse through folders and subfolders in c++ searching for certain file.
Thanks in advance

[Ganado]

In C++17 you can use std::filesystem.

See: https://en.cppreference.com/w/cpp/filesystem/recursive_directory_iterator

#include <fstream>
#include <iostream>
#include <filesystem>
namespace fs = std::filesystem;
 
int main()
{
    fs::create_directories("sandbox/a/b");
    std::ofstream("sandbox/file1.txt");
    fs::create_symlink("a", "sandbox/syma");

    for(auto& p: fs::recursive_directory_iterator("sandbox"))
        std::cout << p.path() << '\n';

    fs::remove_all("sandbox");
}

Possible output:

"sandbox/a"
"sandbox/a/b"
"sandbox/file1.txt"
"sandbox/syma"

To compare with just the filename, use path().filename()
See: https://en.cppreference.com/w/cpp/filesystem/path/filename

[Dee5]

What if I want to search for a certain file within folders and subfolders.....

[Repeater]

In that case, you can use code like this:

for(auto& p: fs::recursive_directory_iterator("folder_to_search"))
{
  if ( p.path().filename() == searchValue)
  {
      // do something
   }
}

[Dee5]

Thanks