#include <ctime>
#include <cstring>
#include <cstdlib>
#include <cstdio>
#include <sys/time.h>

#include <iostream>
#include <sstream>

using namespace std;

#define timersec(tv) (((static_cast<float>((tv)->tv_sec) * 1000000.0f) + (tv)->tv_usec) / 1000000.0f)

int main(int argc, char* argv[])
{
  unsigned int num_loops= 100000;
  unsigned int buf_size= 100;

  if (argc == 2)
    num_loops= atoi(argv[1]);
  
  struct timeval  tvstart;
  struct timeval  tvend;
  struct timezone tz;
  unsigned int    i;
  char            c_oss[buf_size];
  ostringstream   cpp_oss;
  
  memset(c_oss, 0, buf_size);
  cpp_oss.rdbuf()->pubsetbuf(c_oss, buf_size);
  
/*------------------------------------------------------------------*\
\*------------------------------------------------------------------*/
  gettimeofday(&tvstart, &tz);
  // start cpp-version
  for(i= 0; i < num_loops; i++) 
  {
    cpp_oss << i; cpp_oss.clear();
  }
  gettimeofday(&tvend, &tz);

  cout << " cpp - version for " << i << " loops: " 
    << timersec(&tvend) - timersec(&tvstart) << "\n";
      
/*------------------------------------------------------------------*\
\*------------------------------------------------------------------*/
  gettimeofday(&tvstart, &tz);
  // start c-version
  for(i= 0; i < num_loops; i++) 
  {
    snprintf(c_oss, buf_size, "%d", i); 
    memset(c_oss, 0, buf_size);
  }
  gettimeofday(&tvend, &tz);

   cout << " c - version for " << i << " loops: " 
    << timersec(&tvend) - timersec(&tvstart) << "\n";

  
  return 0;
}