sub Init {

  my $file1;
  my $file2;
  my $tmp;

  if(defined($opt_h)){
    print Syntax();
    exit;
  }

  $file1 = $ARGV[0];
  $file2 = $ARGV[1];
  
  print "\nFirst file - $file1\nSecond File - $file2\n";
  
  if((!defined($file1)) || (!defined($file2))){
    print "\nSpecify the correct number of output files!\n";
    print Syntax();
    exit;
  }
  
  if(!defined($opt_c)){
    print "\nNo config file provided, defualt configuration will be used!\n";
    init_default_config();
  } else {
    read_config_file();
  }
  
  if((!(-e $file1)) || (!(-e $file2))){
    print "\nEither of specified files does not exist!\n";
    exit;
  }else{
    #opening input files for reading
    open FILE1, $file1 or die "\nCan't open $file1 for reading: $!\n";
    open FILE2, $file2 or die "\nCan't open $file2 for reading: $!\n";
  }
  
  #opening output files for writing
  open OUTFILE, "results" or die "\nCan't open $file2 for reading: $!\n";
  #print the compare header to output file
  print OUTFILE "CALL-ID\n";
  $tmp = "_" x 78;
  print OUTFILE "$tmp\n";
  
}