// thread example
#include <iostream>       // std::cout
#include <thread>         // std::thread
 
void foo() 
{
  // do stuff...
}
 
void bar(int x)
{
  // do stuff...
}
 
int main() 
{
  std::thread first (foo);     // spawn new thread that calls foo()
  std::thread second (bar,0);  // spawn new thread that calls bar(0)
 
  std::cout << "main, foo and bar now execute concurrently...\n";
 
  // synchronize threads:
  first.join();                // pauses until first finishes
  second.join();               // pauses until second finishes
 
  std::cout << "foo and bar completed.\n";
 
  return 0;
}
 

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