#include <iostream>
#include <string>
#include <sys/timeb.h>

/*!
  Test on:
  case 1: assign;
  case 2: =;
*/
void test_str_assign()
{
  struct timeb tb0, tb1, tb2;
  size_t i1 = 10000000;
  std::string s;
  s.reserve(3);
  int n = s.capacity(); // 15

  ::ftime(&tb0);  
  for (size_t i = 0; i < i1; ++ i) {
    s.assign("abc");
  }
  ::ftime(&tb1);
  for (size_t i = 0; i < i1; ++ i) {
    s = "abc";
  }
  ::ftime(&tb2);
  time_t diff1 = (tb1.time - tb0.time)*1000 + (tb1.millitm - tb0.millitm);
  time_t diff2 = (tb2.time - tb1.time)*1000 + (tb2.millitm - tb1.millitm);
  double ratio = diff1/(double)diff2;
#ifdef NDEBUG
  std::cout << "Release - ";
#else
  std::cout << "Debug   - ";
#endif
  std::cout << "Time spend: s.assign(\"abc\");/s = \"abc\"; = " << diff1 << "/" << diff2 << "\t= " << ratio << std::endl;
}


int main()
{
  test_str_assign();
  return 0;
}