我正在尝试在我的程序中创建多个线程，每当我尝试这样做时
std::thread thread1(threadedfunction);
我收到此错误：non-standard syntax; use '&' to create a pointer to member
当我像这样放&时：
std::thread thread1(&threadedfunction);
我收到此错误：'&': illegal operation on bound member function expression