C++ 利用文件流复制文件

bool CopyFile(const std::string &src, const std::string &dest)
{
    std::ifstream fin(src.c_str(), std::ios::in | std::ios::binary);
    if(!fin)
    {
        std::cout << "open in file[" << src << "] failed" << std::endl;
        return false;
    }
    std::ofstream fout(dest.c_str(), std::ios::out | std::ios::binary);
    if(!fout)
    {
        std::cout << "open out file[" << dest << "] failed" << std::endl;
        return false;
    }
    fout << fin.rdbuf();
    return true;
}