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/*
Adding Strings together
Examples of how to add strings together
You can also add several different data types to string, as shown here:
created 27 July 2010
modified 2 Apr 2012
by Tom Igoe
http://arduino.cc/en/Tutorial/StringAdditionOperator
This example code is in the public domain.
*/
// declare three strings:
String stringOne, stringTwo, stringThree;
void setup() {
// initialize serial and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}
stringOne = String("stringThree = ");
stringTwo = String("this string");
stringThree = String ();
// send an intro:
Serial.println("\n\nAdding strings together (concatenation):");
Serial.println();
}
void loop() {
// adding a constant integer to a string:
stringThree = stringOne + 123;
Serial.println(stringThree); // prints "stringThree = 123"
// adding a constant long interger to a string:
stringThree = stringOne + 123456789;
Serial.println(stringThree); // prints " You added 123456789"
// adding a constant character to a string:
stringThree = stringOne + 'A';
Serial.println(stringThree); // prints "You added A"
// adding a constant string to a string:
stringThree = stringOne + "abc";
Serial.println(stringThree); // prints "You added abc"
stringThree = stringOne + stringTwo;
Serial.println(stringThree); // prints "You added this string"
// adding a variable integer to a string:
int sensorValue = analogRead(A0);
stringOne = "Sensor value: ";
stringThree = stringOne + sensorValue;
Serial.println(stringThree); // prints "Sensor Value: 401" or whatever value analogRead(A0) has
// adding a variable long integer to a string:
long currentTime = millis();
stringOne="millis() value: ";
stringThree = stringOne + millis();
Serial.println(stringThree); // prints "The millis: 345345" or whatever value currentTime has
// do nothing while true:
while(true);
}
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