Вывод структуры в файл [закрыт]

код:

  std::cout << "enter file to write\n> ";
  std::string filename;
  std::cin >> filename;
  std::ofstream myfile(filename, std::ofstream::app | std::ofstream::binary);
  if (myfile){
    std::streamsize size = sizeof(city);
    myfile.write(temp, size);
    std::cout << "SAVED!\n";
  }
  myfile.close();

поля структуры city:

struct city
{
    char name[32];
    int citizens;
    float territory;
    int startyear;
    int schools;
};

ошибка:

test.cpp: In function ‘int main()’:
test.cpp:61:36: error: no matching function for call to ‘std::basic_ofstream<char>::write(city&, std::streamsize&)’
             myfile.write(temp, size);
                                    ^
In file included from /usr/include/c++/7/ostream:693:0,
                 from /usr/include/c++/7/iostream:39,
                 from test.cpp:2:
/usr/include/c++/7/bits/ostream.tcc:182:5: note: candidate: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::write(const _CharT*, std::streamsize) [with _CharT = char; _Traits = std::char_traits<char>; std::streamsize = long int]
     basic_ostream<_CharT, _Traits>::
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/ostream.tcc:182:5: note:   no known conversion for argument 1 from ‘city’ to ‘const char*’