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Arduino/build/shared/examples/08.Strings/StringConstructors/StringConstructors.ino
2012-03-19 19:44:06 -04:00

64 lines
1.8 KiB
C++

/*
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() {
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);
}