String.concat()
Description
Combine, ou "concatène" deux objets String en un seul nouvel objet String. La deuxième chaîne de caractère est accolée à la première, et le résultat est placé dans un nouvel objet String.
Syntaxe
string.concat(string2)
Paramètres
- string et string2: deux variables de type String()
Valeurs Renvoyées
- Un nouveau String qui est la combinaison des deux Strings de départs.
Exemple
// declare three strings:
String stringOne, stringTwo, stringThree;
void setup() {
Serial.begin(9600);
stringOne = String("stringThree = ");
stringTwo = String("this string");
stringThree = String ();
Serial.println("\n\nAdding strings together (concatenation):");
}
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);
}
Voir Également
- Langage: Arduino - String
- Langage: String.charAt()
- Langage: String.compareTo()
- Langage: String.endsWith()
- Langage: String.equals()
- Langage: String.equalsIgnoreCase()
- Langage: String.getBytes()
- Langage: String.indexOf()
- Langage: String.lastIndexOf()
- Langage: String.length()
- Langage: String.replace()
- Langage: String.setCharAt()
- Langage: String.startsWith()
- Langage: String.substring()
- Langage: String.toCharArray()
- Langage: String.toLowerCase()
- Langage: String.toUpperCase()
- Langage: String.trim()
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