Reading Serial port

Reading Serial port

char inData[82]; //create 82 char array
byte index1 = 0; //index byte (0 - 255)
String string_convert; //String
int PCdata[20]; //int array

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

void loop() {
  parsing(); //loop the function
  Serial.println(PCdata[0]);
  Serial.println(PCdata[1]);
  Serial.println(PCdata[2]);
  Serial.println(PCdata[3]);
//  Serial.println(PCdata[...........]);
  delay(5000);
}

void parsing() {
  while (Serial.available() > 0) {
    //while there is data in serial buffer (128 bytes)
    char aChar = Serial.read(); //aChar - current symbol in buffer
    if (aChar != '$') {
      //if aChar isnt the 'E' (End) symbol do:
      inData[index1] = aChar;
      //(inData - array, index - loop № counter) write all Buffer to the array
      index1++; //index + 1 - loop count
      inData[index1] = '\0';
      //set the next position to '\0' or null symbol
    } else {
      //if aChar or current buffer symbol is 'E' (End) do:
      char *p = inData; //create inData address pointer
      char *str; //create pointer
      index1 = 0; //set counter to 0
      String value = ""; //create string
      while ((str = strtok_r(p, ";", &p)) != NULL) { //???
        string_convert = str; //???
        //Serial.println(string_convert);
        PCdata[index1] = string_convert.toInt(); //???
        index1++; //counter + 1 - loop count
      }
      index1 = 0; //counter to 0
    }
  }
}