Just pass in the address of a function to the thread constructor.

The thread will start executing the function immediately.

#include <thread>
#include <iostream>
 
using namespace std;
 
void FireMissile()
{
  cout << "Firing sidewinder missile " << endl;
}
 
int main()
{
  // Create a thread with a function pointer.
  thread t1(FireMissile);
  t1.join();
 
  return 0;
}