6 replies to this topic

[sourlemon]

Suppose I want to read the 50th line of a text file, is there a way to do that?

[Aereshaa]

skip through the file until you get to the 49th newline.

[sourlemon]

Thank you Aereshaa. But how would I make my program skip to the 49th newline?

I'm newbie with this, so I'm not sure I understand you correctly.

The only line reading I know is fgets, which reads a line. So, if I want to read the 50th line, I would have to put it in a loop and count how many time I calls fgets?

[Aereshaa]

That's correct. However, make sure you create a buffer to use fgets on.

[sourlemon]

So paying attention in class does pay off :) Thank you. But what's a buffer? And how can I create that?

Another question, suppose I looked at the 50th line. How do I restart at the first line again?

Edited by sourlemon, 28 February 2009 - 05:05 PM.

[Aereshaa]

A buffer means the string that you read the line into:
char buf[100];
To restart a file, call fseek(file, 0, SEEK_SET)
if you have any problems post your code and we'll work them out.

[sourlemon]

Ahhh that's a buffer. Got that and the fseek :) Thank you Aereshaa.