Am 21.06.2011 20:36, schrieb Le_Forgeron:

> I wonder a bit about the construct
>
> 		while ( !Stream.eof() )
> 		{
> 			// get and preprocess line
> 			std::getline(Stream, line);
> 			line = pre_process_conf_line(line);
> 			++line_number;
>
> 			// skip empty line
> 			if(line.length() == 0)
> 				continue;
>
> If the last line is length 0, would the eof() be evaluated (again) ?

The C/C++ language construct

     while ( <CONDITION_1> )
     {
         <STATEMENTS_A>
         if ( <CONDITION_2> ) continue;
         <STATEMENTS_B>
     }

is fully equivalent to

     while ( <CONDITION_1> )
     {
         <STATEMENTS_A>
         if ( ! <CONDITION_2> )
         {
             <STATEMENTS_B>
         }
     }

Post a reply to this message