Не получается открыть бинарный файл

void Garage::saveGarage()
{
    inv.open("inv", ios::out|ios::binary);
    size_t str_size = name.size();
    inv.write((char *)&str_size, sizeof(size_t));
    inv.write(name.c_str(), str_size);
    inv.write((char *)&count, sizeof(int));
    inv.close();
}

bool Garage::takeFile()
{
    size_t str_size = 0;
    inv.open("inv", ios::in | ios::binary);
    inv.read((char *)&str_size, sizeof(size_t));
    copy_n(istream_iterator<char>(inv), str_size, back_inserter(name));
    inv.close();
    return true;
}

void Garage::saveGarage()
{
    fstream inv("inv", ios::out|ios::binary);
    if(inv)
    {
       size_t str_size = name.size();
       inv.write((char *)&str_size, sizeof(size_t));
       inv.write(name.c_str(), str_size);
       inv.write((char *)&count, sizeof(int));
       inv.close();
    }
}

#include <iostream>
#include <fstream>
#include <windows.h>
#include <string>
 
using namespace std;
 
void main()
{
    SetConsoleCP(1251);
    SetConsoleOutputCP(1251);
    string nameG = "Гараж1";
    int count = 4;
    int index = 1;
    int type = 1;
    string name = "Ту-300";
    int speed = 200;
    int year = 2009;
    fstream inv;
    inv.open("inv", ios::out | ios::binary);
    size_t str_size = nameG.size();
    size_t str_size1 = name.size();
    inv.write((char *)&str_size, sizeof(size_t));
    inv.write(nameG.c_str(), str_size);
    inv.write((char *)&count, sizeof(int));
    inv.write((char *)&index, sizeof(int));
    inv.write((char *)&type, sizeof(int));
    inv.write((char *)&str_size1, sizeof(size_t));
    inv.write(name.c_str(), str_size1);
    inv.write((char *)&speed, sizeof(int));
    inv.write((char *)&year, sizeof(int));
    inv.close();
    inv.open("inv", ios::in | ios::binary);
    nameG = "";
    name = "";
    count = index = type = 0;
    speed = 0;
    year = 0;
    inv.read((char *)&str_size, sizeof(size_t));
    copy_n(istream_iterator<char>(inv), str_size, back_inserter(nameG));
    inv.read((char *)&count, sizeof(int));
    inv.read((char *)&index, sizeof(int));
    inv.read((char *)&type, sizeof(int));
    inv.read((char *)&str_size1, sizeof(size_t));
    copy_n(istream_iterator<char>(inv), str_size1, back_inserter(name));
    inv.read((char *)&speed, sizeof(int));
    inv.read((char *)&year, sizeof(int));
    inv.close();
    cout << nameG << " " << count << " " << index << " " << type << " " << name << " " << speed << " " << year << " " << endl;
    system("pause");
}

bool Garage::takeFile()
{
    fstream inv;
    string name1 = "";
    if (inv)
    {
        size_t str_size = 0;
        inv.open("inv", ios::in | ios::binary);
        inv.read((char *)&str_size, sizeof(size_t));
        copy_n(istream_iterator<char>(inv), str_size, back_inserter(name1));
        inv.close();
    }
    setName(name1);
    return true;
}
 
void Garage::setName(string val)
{
    name = val;
}

 inv.open("inv", ios::in | ios::binary);

bool Garage::takeFile()
{
    fstream inv("inv", ios::in | ios::binary);
    
    if (inv)
    {
        string name1 = "";
        size_t str_size = 0;
        inv.read((char *)&str_size, sizeof(size_t));
        copy_n(istream_iterator<char>(inv), str_size, back_inserter(name1));
        inv.close();
    
        setName(name1);
        return true;
   }
   return false;
 
}