String.toCharArray()

Descrição

Copia os caracteres da String para o buffer fornecido.

Sintaxe

minhaString.toCharArray(buf, compr)

Parâmetros

  • minhaString: umavariável do tipo String
  • buf: the buffer no qual os caracteres devem ser copiados(char [])
  • compr: o comprimento do buffer (unsigned int)

Retorna

Nada

Código de Exemplo

void setup() { Serial.begin(9600); String myString = "Arduino"; byte buffer[myString.length() + 1]; myString.toCharArray(buffer, myString.length() + 1); for (int i = 0; i < myString.length() + 1; i++) Serial.println(buffer[i], HEX); } void loop() { }

The result on Serial Monitor:

Newbiely | Arduino IDE 2.3.8
──
File
Edit
Sketch
Tools
Help
Arduino Uno
Newbiely.ino
···
8 Serial.println("Hello World!");
Output
Serial Monitor
Message (Enter to send message to 'Arduino Uno' on 'COM15')
New Line
9600 baud
41 72 64 75 69 6E 6F 0
Ln 11, Col 1
Arduino Uno on COM15
2

※ Notas e Advertências:

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

Ver Também

Exemplo : Tutoriais String (Em Inglês)

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