i am creating a computergame atm.
a MMORPG for 50 players a time.
but i want to read a part of the map out of a file.
i am using the file iostream for this.
but is there a way to read it line for line??
and if i only need line 50 that he will leave the rest and only read line 50??
Well the short answer is to use a loop to count through the lines until you get the one you want.
A longer answer is to read every line of the file, and build up an index of 'tell' positions for each line, then you can 'seek' to any given line at a later time.
Unless the file is excessively large, then reading the whole file into memory (say a std::vector<std::string> of lines) is an alternative.
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
If at first you don't succeed, try writing your phone number on the exam paper.
