新人求助，wifi不分配IP

修改/etc/network/interfaces文件方法如下
auto lo
iface lo inet loopback
iface eth0 inet dhcp
auto wlan0allow-hotplug wlan0
iface wlan0 inet dhcp
wpa-ssid “b217”
wpa-psk “printf("doubi");”
修改sudo nano /etc/wpa_supplicant/wpa_supplicant.conf方法
ctrl_interface=/var/run/wpa_supplicantctrl_interface_group=0ap_scan=2
network={
ssid=“b217“
psk=”printf("doubi");“
}