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Arduino C++ polymorphism

Arduino nerd answered on August 13, 2022 Popularity 1/10 Helpfulness 1/10

answer Arduino C++ polymorphism

Arduino C++ polymorphism

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class Apple { // creating a class with a polymorphical function
  public:
    void eating(int i) { // if eating will be entered with one variable,
      if (i == 1) {     // then this is gonna be the code of the function.
        Serial.print(i);
        Serial.println(" human is eating an apple");
      }
      else if (i > 1) {
        Serial.print(i);
        Serial.println(" people are eating an apple");
      }
    }

    void eating(String i, int a) { // this is the code for two variables,
      Serial.print(i);			   // if one is string, and another integral.
      Serial.print(" is eating an apple with ");
      if (a == 1) {
        Serial.println("1 human");
      }
      else if (a > 1) {
        Serial.print(a);
        Serial.println(" people");
      }
    }
};

String messagestr; // variable for String message from the serial port.
int messageint;    // variable for integral message.
const unsigned int MAX_MESSAGE_LENGTH = 12; // max message length of the message.
String vpih;       // a variable to "remember" messagestr.
Apple object;      // a class object.

void setup() {
  Serial.begin(9600); // starting the Serial port
}

void loop() {
  while (Serial.available() > 0) { //Recieving a message from the Serial port
    // more about it's creation on https://www.youtube.com/watch?v=nSGnCT080d8&t=148s

    static char message[MAX_MESSAGE_LENGTH];
    static unsigned int message_pos = 0;
    char inByte = Serial.read();

    if (inByte != '\n' && (message_pos < MAX_MESSAGE_LENGTH - 1)) {
      message[message_pos] = inByte;
      message_pos++;
    }
    else {
      message[message_pos] = '\0';
      messageint = atoi(message); // if the message I receive is integral, 
      if (messageint == 0) {      // then it is being put here.
        messagestr = message;	  // if the message is not integral, then put it here.
      }

      if (messagestr != "" && messagestr != vpih) { // if  the program has received a string message
      	vpih = messagestr;							// and it's not the same it was previously,
      }          									// then put it into this variable temporarily.


      if (vpih != "" && messageint != 0) { // if the temporal variable has a message and there is an
        object.eating(vpih, messageint);   // integral message, then do the function with these variables.
        vpih = "";               		   // resetting the variable after the function.
      }
      else if (messagestr == "" && messageint != 0) {// if there is no message received as a string and
        object.eating(messageint);					 // there is a message received as an integral,
      }												 // then do the function with the number.
      messagestr = ""; // reset all the variables
      messageint = 0;
      message_pos = 0;
    }
  }
}

Popularity 1/10 Helpfulness 1/10 Language cpp

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Contributed on Aug 13 2022

Arduino nerd

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Arduino C++ polymorphism

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