syncio.cc

// g++ syncio.cc -o syncio -std=c++11
#include <iostream>
#include <thread>
#include <string>
#include <unistd.h>

using namespace std;

void theThread()
{
  for(int counter = 0 ;; ++counter) {
    usleep(250000);
    cout << "Hi "<< counter << endl;
  }
}

int main()
{
  std::ios_base::sync_with_stdio(false);
  //cin.tie(nullptr);
  
  string line;
  thread t(theThread);
  while(getline(cin, line))
    ;
}