Thread: How to keep track of the position in a binary file.

hi,

I want to have two functions in a program acess the same binary file, but I want the second function to strat reading it fro mwhere the first one left off. Aside from counting how many bytes each function reads in, is there another way to record the position in the binary file where the first function finishes? and how is it done?

thanks.

How about simply reusing the file pointer you're already working with? Unless you close the streem, seek some place else, rewind it, or something like that, it'll be where you left off.


Quzah.

If you can't reuse the same stream, use ftell() and fseek().

So if I have the file pntr as a global variable I can not clode the in stream and use it by another function in the program?

or I can save the position returned by ftell to a global variable and then fseek to it once the file is opened again. and will it return an int, the byte number the pointer is at?

I actually tried, saving the return of ftell() to a global int and it seemed to work.


thanks guys,

AS.