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This example is for Wiring version 1.0 build 0100+. If you have a previous version, use the examples included with your software. If you see any errors or have comments, please let us know.

String constructors by Tom Igoe
Examples of how to create strings from other data types

    void setup()
    {
      Serial.begin(9600);
    }

    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);

      // do nothing while true:
      while (true);

    }