/* String constructors Examples of how to create strings from other data types created 27 July 2010 modified 30 Aug 2011 by Tom Igoe http://www.arduino.cc/en/Tutorial/StringConstructors This example code is in the public domain. */ void setup() { // Open serial communications and wait for port to open: Serial.begin(9600); while (!Serial) { ; // wait for serial port to connect. Needed for native USB port only } // send an intro: Serial.println("\n\nString Constructors:"); Serial.println(); } void loop() { // using a constant String: String stringOne = "Hello String"; Serial.println(stringOne); // prints "Hello String" // converting a constant char into a String: stringOne = String('a'); Serial.println(stringOne); // prints "a" // converting a constant string into a String object: String stringTwo = String("This is a string"); Serial.println(stringTwo); // prints "This is a string" // concatenating two strings: stringOne = String(stringTwo + " with more"); // prints "This is a string with more": Serial.println(stringOne); // using a constant integer: stringOne = String(13); Serial.println(stringOne); // prints "13" // using an int and a base: stringOne = String(analogRead(A0), DEC); // prints "453" or whatever the value of analogRead(A0) is Serial.println(stringOne); // using an int and a base (hexadecimal): stringOne = String(45, HEX); // prints "2d", which is the hexadecimal version of decimal 45: Serial.println(stringOne); // using an int and a base (binary) stringOne = String(255, BIN); // prints "11111111" which is the binary value of 255 Serial.println(stringOne); // using a long and a base: stringOne = String(millis(), DEC); // prints "123456" or whatever the value of millis() is: Serial.println(stringOne); //using a float and the right decimal places: stringOne = String(5.698, 3); Serial.println(stringOne); //using a float and less decimal places to use rounding: stringOne = String(5.698, 2); Serial.println(stringOne); // do nothing while true: while (true); }