#define _CRT_SECURE_NO_WARNINGS

#include <iostream>
#include <Windows.h>
#include <fstream>
#include <filesystem>

using namespace std;

int directory_size(const string& str) {
    int size = 0;
    for (const auto& a : filesystem::directory_iterator(str)) {
        string full_name = str + '/' + a.path().filename().string();
        if (filesystem::is_regular_file(full_name)) {
            size += filesystem::file_size(full_name);
        }
        if (filesystem::is_directory(full_name)) {
            size += directory_size(full_name);
        }
    }
    return size;
}


int main() {
    SetConsoleCP(1251);
    SetConsoleOutputCP(1251);

    cout << directory_size("C:/Users/PC/Desktop/Protobuf_windows") << endl;
}