text: #include <fstream>
  #include "dxf_converter.h"
  
  int main(int argc, char* argv[]){
  
  Dxf_converter converter;
  char* Benchfilename;
  char exten[4];
  
   
  if (argv[1] != NULL)
   {
  		int len =strlen(argv[1]);
  		for (int j=0; j < 3 ; j++)
  		{
  		  exten[j]=argv[1][len - 3 + j];
  		}
  		if (strncmp(exten,"dxf",3))
  		{
  		  std::cout<< "File is not correct (*.dxf is needed)." << std::endl;
  		 return 0;
  		}
  		else{
  		std::cout<< "File "<< argv[1] << " is correct."<<std::endl;
  		}
  		if (argc >2 and argv[2] != NULL)
  		 {
  			int len =strlen(argv[2]);
  			for (int j=0; j < 4 ; j++)
  			{
  		  		exten[j]=argv[2][len - 4 + j];
  			}
  			if (strncmp(exten,"arr",4) !=0)
  			{
  		 		std::cout<< "File "<< argv[2] << " is not correct (*.arr is needed)." << std::endl;
  		 		return 0;
  			}
  			else{
  			std::cout<< "File "<< argv[2] << " is correct." <<std::endl;
  			strcpy(Benchfilename,argv[2]);
  			}
   		} 
  		else
   		{strcpy(Benchfilename,"");
  		int len= strlen(argv[1]);	
  		strncat(Benchfilename,argv[1],len-4);
  		strcat(Benchfilename,".arr");
   		}
  
   } 
  else
   {	
   cout<<"file "<< argv[1]<< " is not found"<<std::endl;
   return 0;
   }
    std::cout<<Benchfilename<<std::endl;
  
   std::ifstream fintest;
   fintest.open(argv[1]);
   if (!fintest.is_open())
    {
      cout<<"file "<<argv[1] << " is not found"<<std::endl;
  fintest.close();
      return 0;
    } 
  
   std::ifstream fin(argv[1]);
   std::ofstream fout(Benchfilename);
  // std::ofstream fout("test.arr");
   fout<< "FileFormat(\"AcsBenchmark\",0,1)"<<std::endl;
   fout<<"BenchmarkName(\""<<Benchfilename<<"\")"<<std::endl;
   fout<<"Classification(\"Arrangement\",\" Line\",\" BoundedArcs\",\"Rnd\",\"1\",\"Jan-2006\")"<<std::endl;
   fout<<"Classification(\"Arrangement\",\" Circles\",\" FullCurves\",\"Rnd\",\"1\",\"Jan-2006\")"<<std::endl;
   fout<<"Classification(\"Arrangement\",\" Conics\",\" FullCurves\",\"Rnd\",\"1\",\"Jan-2006\")"<<std::endl;
   fout<<"Classification(\"Arrangement\",\" Conics\",\" BoundedArcs\",\"Rnd\",\"1\",\"Jan-2006\")"<<std::endl;
   fout <<std::endl;
   converter(fin,fout);
   std::cout<<"convertation-finished"<<std::endl;
   fin.close();
   fout.close();
   std::cout<<"files closing-finished"<<std::endl;
  return 1;
  } 
  