#include <WiFi.h>

void setup() {
  Serial.begin(115200);
  WiFi.begin("Wokwi-GUEST","");
  String myMac = WiFi.macAddress();
  Serial.print("My mac: ");
  Serial.println(myMac);
  Serial.printf("My mac: %s\n", WiFi.macAddress().c_str());}

void loop() {delay(-1);}