return

Descrição

Termina uma função e retorna um valor, caso desejado.

Sintaxe

return; return valor; // ambas as formas são válidas

Parâmetros

  • valor: qualquer variável ou constante de qualquer tipo de dado

Código de Exemplo

Uma função para comparar a saída de um sensor com um limiar

int checaSensor() { if (analogRead(0) > 400) { return 1; } else { return 0; } }

The return keyword is handy to test a section of code without having to "comment out" large sections of possibly buggy code.

void loop() { return; // the rest of a dysfunctional sketch here // this code will never be executed }

Testing Example

void setup() { Serial.begin(9600); printMessage(); } void loop() { } void printMessage() { Serial.println("Hello, ArduinoGetStarted.com"); return; Serial.println("Hi, ArduinoGetStarted.com"); }

The result on Serial Monitor:

COM6
Send
Hello, ArduinoGetStarted.com
Autoscroll Show timestamp
Clear output
9600 baud  
Newline  

As we can see, the text after return is not printed.

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