C based timer

#include <iostream>

1. include <unistd.h>

<using namespace std;

// Define the callback function

void callback() {

cout << "Timer callback called!" << endl;

}

// Create the timer

timer_t timer;

struct sigevent sigev;

// Set up the timer

sigev.sigev_notify = SIGEV_THREAD;

sigev.sigev_notify_function = callback;

sigev.sigev_value.sival_ptr = &timer;

timer_create(CLOCK_REALTIME, &sigev, &timer);

// Start the timer

timer_settime(timer, 0, new itimerspec{1, 0}, NULL);

// Wait for the timer to expire

pause();

// Delete the timer

timer_delete(timer);