c++ get all folders in directory filesystem code example

Example 1: c++ get files in directory

#include <string>
#include <iostream>
#include <filesystem>
namespace fs = std::filesystem;

int main() {
    std::string path = "/path/to/directory";
    for (const auto & entry : fs::directory_iterator(path))
        std::cout << entry.path() << std::endl;
}

Example 2: number all files in a folder

ls -v | cat -n | while read n f; do mv -n "$f" "$n.ext"; done