source: arduino-1-6-7/trunk/fuentes/arduino-ide-amd64/examples/08.Strings/StringAppendOperator/StringAppendOperator.ino @ 4837

Last change on this file since 4837 was 4837, checked in by daduve, 2 years ago

Adding new version

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1/*
2  Appending to Strings using the += operator and concat()
3
4 Examples of how to append different data types to strings
5
6 created 27 July 2010
7 modified 2 Apr 2012
8 by Tom Igoe
9
10 http://www.arduino.cc/en/Tutorial/StringAppendOperator
11
12 This example code is in the public domain.
13 */
14
15String stringOne, stringTwo;
16
17void setup() {
18  // Open serial communications and wait for port to open:
19  Serial.begin(9600);
20  while (!Serial) {
21    ; // wait for serial port to connect. Needed for native USB port only
22  }
23
24  stringOne = String("Sensor ");
25  stringTwo = String("value");
26  // send an intro:
27  Serial.println("\n\nAppending to a string:");
28  Serial.println();
29}
30
31void loop() {
32  Serial.println(stringOne);  // prints  "Sensor "
33
34  // adding a string to a string:
35  stringOne += stringTwo;
36  Serial.println(stringOne);  // prints "Sensor value"
37
38  // adding a constant string to a string:
39  stringOne += " for input ";
40  Serial.println(stringOne);  // prints "Sensor value for input"
41
42  // adding a constant character to a string:
43  stringOne += 'A';
44  Serial.println(stringOne);   // prints "Sensor value for input A"
45
46  // adding a constant integer to a string:
47  stringOne += 0;
48  Serial.println(stringOne);   // prints "Sensor value for input A0"
49
50  // adding a constant string to a string:
51  stringOne += ": ";
52  Serial.println(stringOne);  // prints "Sensor value for input"
53
54  // adding a variable integer to a string:
55  stringOne += analogRead(A0);
56  Serial.println(stringOne);   // prints "Sensor value for input A0: 456" or whatever analogRead(A0) is
57
58  Serial.println("\n\nchanging the Strings' values");
59  stringOne = "A long integer: ";
60  stringTwo = "The millis(): ";
61
62  // adding a constant long integer to a string:
63  stringOne += 123456789;
64  Serial.println(stringOne);   // prints "A long integer: 123456789"
65
66  // using concat() to add a long variable to a string:
67  stringTwo.concat(millis());
68  Serial.println(stringTwo); // prints "The millis(): 43534" or whatever the value of the millis() is
69
70  // do nothing while true:
71  while (true);
72}
73
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