String.setCharAt()

Description

Modifie un caractère d'un objet String. N'a aucun effet sur les emplacements extérieurs à la longeur de l'objet String existant.

Syntaxe

string.setCharAt(index, c)

Paramètres

  • string: une variable de type String()
  • index: l'emplacement du caractère à modifier
  • c: le caractère à mettre à l'emplacement défini.

※ Remarque:

l'index du premier caractère est 0.

Valeurs Renvoyées

  • Aucune

Exemple

void setup() { Serial.begin(9600); String myString = "Arduino"; Serial.println(myString); // string before myString.setCharAt(0, 'B'); myString.setCharAt(6, 'Y'); Serial.println(myString); // string after } void loop() { }

The result on Serial Monitor:

COM6
Send
Arduino BrduinY
Autoscroll Show timestamp
Clear output
9600 baud  
Newline  

※ Remarque:

If the string is modified, it is highly recommended using String.reserve() to prevent the memory fragmentation issue

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