代码报错： error:expected ';' before 'return'

[Hello,2姐]

ret_code probe_ssh2_t::open(const std::string& ip, unsigned short port,
const std::string& username, const std::string& password)
{
int ret_connect;
ret_connect = ssh2_.connect(ip, port, username, password);

if(ret_connect == 0)
return HORUS_E_NONE;
else if(ret_connect > 0)
return HORUS_E_SYSTEM_INTERNAL;
else(ret_connect < 0 && ret_connect >-100)
return HORUS_E_SSH;
}


我怎么都看不出错误，请帮助

[缘中人]

else(ret_connect < 0 && ret_connect >-100)

[ccrun.com]

if (ret_connect == 0)
	return HORUS_E_NONE;
else if (ret_connect > 0)
	return HORUS_E_SYSTEM_INTERNAL;
else if (ret_connect < 0 && ret_connect > -100)
	return HORUS_E_SSH;
else
	return XXX;

[jne888]

[Kanson]

else if(ret_connect < 0 && ret_connect >-100)