Convert int to char [] ... int num = [number] str = String(num); str.toCharArray(cstr,16); Serial.println(cstr);. However, per Majenko's The Evils ... ... <看更多>
To convert and append an integer, use operator += (or member function concat ): String stringOne = "A long integer: "; stringOne += 123456789;. ... <看更多>
