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این علامت & چیه ؟
(radio.available(&pipeNum)
کد:
    byte pipeNum = 0; //variable to hold which reading pipe sent data
    byte gotByte = 0; //used to store payload from transmit module
    
    while(radio.available(&pipeNum)){ //Check if recieved data
     radio.read( &gotByte, 1 ); //read one byte of data and store it in gotByte variable
     Serial.print("Recieved guess from transmitter: "); 
     Serial.println(pipeNum); //print which pipe or transmitter this is from
     Serial.print("They guess number: ");
     Serial.println(gotByte); //print payload or the number the transmitter guessed
     if(gotByte != daNumber) { //if true they guessed wrong
      Serial.println("Fail!! Try again."); 
     }
     else { //if this is true they guessed right
      if(sendCorrectNumber(pipeNum)) Serial.println("Correct! You're done."); //if true we successfully responded
      else Serial.println("Write failed"); //if true we failed responding
     }
     Serial.println();
    }