while
Descripción
Los bucles while se ejecutan de forma continua, e infinitamente, hasta que la expresión dentro del paréntesis() se convierte en falsa. Algo debe cambiar la variable de prueba, o el bucle while nunca se terminará. Este cambio podría ser en el código, tal como que una variable sea incrementada, o una condición externa, tal como la comprobación de un sensor.
Sintaxis
while(expression){
//instrucción(s)
}
Parámetros
- expression: una instrucción (boolean) C que se evalúa como verdadera o falsa.
Ejemplo
void setup() {
Serial.begin(9600);
Serial.println("====== TEST START ======");
int i = 0;
while (i < 5) { // repite algo 5 veces
Serial.print("Inside the WHILE loop: i = ");
Serial.println(i);
i++; // increase i by 1
}
Serial.println("====== TEST END ========");
}
void loop() {
}
In the example above, the code in the loop will run, over and over again, as long as a variable (i) is less than 5.
The result on Serial Monitor:
8
Serial.println("Hello World!");
Message (Enter to send message to 'Arduino Uno' on 'COM15')
New Line
9600 baud
====== TEST START ======
Inside the WHILE loop: i = 0
Inside the WHILE loop: i = 1
Inside the WHILE loop: i = 2
Inside the WHILE loop: i = 3
Inside the WHILE loop: i = 4
====== TEST END ========
※ Nota:
- When you know exactly how many times you want to loop through a block of code, use the for loop instead of a while loop.
- The following while loop loops forever:
while (true) {
// statement(s)
}
※ ARDUINO BUY RECOMMENDATION
| Arduino UNO R3 | |
| Arduino Starter Kit |
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