如何使用C++读取ini文件并进行备份

#include 
#include 
#include 
#include 

using namespace std;

int main()
{
    // 读取ini文件  
    string file_path = "file.ini"; //文件路径，请自行修改
    string current_dir = GetCurrentDir(); //获取当前目录
    string full_file_path = current_dir + '\\' + file_path; //拼接完整路径
    ifstream in(full_file_path.c_str());
    if (!in.is_open())
    {
        cout << "文件打开失败" << endl;
        return -1；
    }

    // 备份ini文件  
    string bak_file_path = "file_backup.ini"; //备份文件路径，请自行修改
    string bak_full_file_path = current_dir + '\\' + bak_file_path; //拼接完整路径
    ofstream out(bak_full_file_path.c_str());
    if (!out.is_open())
    {
        cout << "备份文件创建失败" << endl;
        return -1；
    }
    string line;
    while (getline(in, line))
    {
        out << line << endl;
    }

    in.close();
    out.close();
    cout << "备份成功" << endl;

    return 0;
}

string GetCurrentDir()
{
    char exeFullPath[MAX_PATH];
    GetModuleFileName(NULL, exeFullPath, MAX_PATH);

    string strPath = (string)exeFullPath;
    int pos = strPath.find_last_of('\\', strPath.length());
    return strPath.substr(0, pos);
}