String.charAt()

Description

Accéder à un caractère particulier d'un objet String

Syntaxe

string.charAt(n)

Paramètres

  • string: une variable de type String()
  • n: la position du caractère auquel accéder.

※ Remarque:

l'index du premier caractère est 0.

Valeurs Renvoyées

  • Le nième caractère de l'objet String

Exemple

void setup() { Serial.begin(9600); String myString = "Arduino"; char myChar = myString.charAt(2); Serial.println(myChar); } void loop() { }

The result on Serial Monitor:

COM6
Send
d
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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