int number = 90;   // Declare an integer
int *ptr = &number;  // Declare a pointer

void setup() {
  Serial.begin(115200);  // Initialize Serial Monitor
}

void loop() {
  Serial.println("Value of number: " + String(number));
  Serial.print("Address of number: ");
  Serial.println((uintptr_t)&number, HEX);  //HEX specifies that the memory address should be displayed in hexadecimal format
  Serial.println("Value using pointer: " + String(*ptr));
  Serial.println("--------------------------");
  delay(1000);  // 1-second delay
}