Запись и чтение файла wofstream

wofstream & dish::save_to_file(wofstream & offile)
{
    int size = 0;
    size = wcslen(title);
    offile.write(reinterpret_cast<wchar_t*>(&size), sizeof(int));
    offile.write(title, size * sizeof(wchar_t));
 
    size = price;
    offile.write(reinterpret_cast<wchar_t*>(&size), sizeof(int));
 
    size = type;
    offile.write(reinterpret_cast<wchar_t*>(&size), sizeof(int));
 
    size = wcslen(description);
    offile.write(reinterpret_cast<wchar_t*>(&size), sizeof(int));
    offile.write(description, size * sizeof(wchar_t));
    return offile;
}

wofstream offile("data.txt" , wios::binary);
        arr.write_to_file(offile);
        offile.close();

#include<fstream>
using namespace std;

    std::ofstream of("data.txt", std::wios::binary);
    const wchar_t *s= L"\nstring";
    size_t len = wcslen(s);
    of.write(reinterpret_cast<const char*>(&len), sizeof(size_t));
    of.write(reinterpret_cast<const char*>(s), sizeof(wchar_t) * len);
    of.close();