(C++) difftime

include <iostream>

include <ctime>


int main()
{
  const std::clock_t begin = std::clock();
  for (int i=0; i<10000000; ++i) std::rand();
  const std::clock_t end = std::clock();
  std::cout << "Time of STL rand(): " << std::difftime(end,begin) 
    << " miliseconds" << std::endl;
}

Same example using the Boost C++ library

include <iostream>

include <boost/timer.hpp>


int main()
{
  boost::timer t;
  for (int i=0; i<10000000; ++i) std::rand();
  std::cout << "Time elapsed: " << t.elapsed() << " seconds" <<std::endl;
}

Code links

• #include
• const
• cout
• difftime
• for
• iostream
• #include
• int
• main
• return
• std
• time (header file)