String zi = "192.168.22.323"; int a, b; void setup() { pinMode(13, OUTPUT); pinMode(12, INPUT_PULLUP); Serial.begin(9600); zi = zi.substring(zi.indexOf("192.168") + 8, zi.indexOf("192.168") + 16); Serial.println(zi); Serial.print("a="); a = zi.substring(0, zi.indexOf(".")).toInt(); Serial.println(a); Serial.println(a / 100 % 10);//獲取百位數 Serial.println(a / 10 % 10);//獲取十位數 Serial.println(a/ 1 % 10);//個位數 Serial.println("-----------------"); Serial.print("b="); b = zi.substring(zi.indexOf(".") + 1, zi.indexOf("\"")).toInt(); Serial.println(b); Serial.println(b / 100 % 10);//獲取百位數 Serial.println(b / 10 % 10);//獲取十位數 Serial.println(b / 1 % 10);//個位數 if(digitalRead(10)==0) { WIFI_IP_LED(); } } void loop...