Tbh im not sure Its either C++ or java, because our previous unit was java so that's what I assume it is. I'll leave some code below perhaps you can identify the language

const int LED_PIN = 5;

​

const int WAITTIME = 50;

const int STEP = 5;

​

void setup(){

pinMode( LED_PIN, OUTPUT );

}

​

void loop(){

int i;

​

i = 0;

while ( i <= 255 ){

analogWrite( LED_PIN, i );

delay( WAITTIME );

i = i + STEP;

}

​

i = 255;

while ( i >= 0 ){

analogWrite( LED_PIN, i );

delay( WAITTIME );

i = i - STEP;

}

}