byte val = 0b0000;

void incr() {
  static int x;
  x++;
  Serial.print("X: "); Serial.println(x);
}

char* test(char &ptr) {
  int v2 = ptr++;
  return ptr;
}



const char msg[8] = "ABCDEFG";

void setup() {
  Serial.begin(9600);
  char* p = &(msg[0]);
  Serial.println(msg);
  test(&(msg[0]));
  Serial.println(p);
  Serial.println(test(p));
   Serial.println(test(p));
  int v1 = 5;
  char arr[3] = {'1','2','3'};
  char* ptr = &(arr[0]);
  int v2 = *ptr++;
  
  /*
  char* ptr;

  ptr = msg;
  ptr++;
  Serial.println(ptr);


  char c = ptr[0];
  Serial.println(c);

  byte a = 0b10000; Serial.println(a, DEC);
  */
  /*
  val |=  (1 << 4);
  Serial.println(val, BIN); Serial.println(val, HEX);

  val |=  (1 << 0);
  Serial.println(val, BIN); Serial.println(val, HEX);
  */
}

void loop() {
 delay(10);
}