C++ script for counting OpenBoard pages

#include <iostream>
#include <stdio.h>
#include <string>
#include <cstring>
#include <filesystem>

using namespace std;

namespace fs = filesystem;

int main() {
  // total pages
  int pages = 0;

  // current path is .
  string path = ".",
         path2, file;

  // needed for searching substrings
  size_t found, size;

  // auxiliary strings
  char f[100], metadata[1000];

  // looping through openboard documents
  for (const auto & entry : fs::directory_iterator(path)) {
    path2 = entry.path();

    // cout << path2 << '\n';

    // check if current entry is an openboard document
    found = path2.find("OpenBoard");

    // if not then go to the next item
    if (found == string::npos) continue;

    // loop through openboard document's files
    for (const auto & entry2 : fs::directory_iterator(path2)) {
      file = entry2.path();

      // search the metadata.rdf file
      found = file.find("metadata.rdf");

      if (found != string::npos) {
        // cout << "  " << file << '\n';
        size = file.size();

        // if we find it, put the location of the file in an auxiliary string
        for (int i = 2; i < size; i++) {
          f[i-2] = file[i];
        }

        f[size-2] = '\0';

        // cout << "  " << f << '\n';

        // open the file
        freopen(f, "r", stdin);

        bool found = false;

        // find the page-count
        while (cin.getline(metadata, 1000) && !found) {
          // cout << metadata << '\n';

          // search for page-count
          char *p = strstr(metadata, "page-count");

          // if we find it we form the number of pages
          if (p) {
            int n = 0;
            int k = p - metadata + 11;
            found = true;

            while ('0' <= metadata[k] && metadata[k] <= '9') {
              n = n * 10 + (metadata[k] - '0');
              k++;
            }

            cout << n << '\n';

            // add the pages to the total
            pages += n;
          }
        }

        // close current file
        fclose(stdin);
      }
    }
  }

  cout << pages << '\n';

  return 0;
}