| /* |
| String constructors |
| |
| Examples of how to create strings from other data types |
| |
| created 27 July 2010 |
| modified 30 Aug 2011 |
| by Tom Igoe |
| |
| http://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 Leonardo 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); |
| |
| // do nothing while true: |
| while(true); |
| |
| } |