reverse reading

[ravenspawn]

how would I read a random-access file backwards?

 

[Cagliostro]

what do you mean random access backward? can you give a short sample? John Fill

ivfmd@mail.md

 

[TheInsider]

Get the length of the file, set the file pointer to the end of the file (length) - the size of the buffer, then move the file pointer backwards from there in a loop...

i.e.

1) file pointer position = length of file - sizeof(buffer)

2) read data into buffer

3) set file pointer position = file pointer position - sizeof(buffer)

4) loop steps 2 and 3 until file position is 0/BOF Rob Marriott
rob@career-connections.net

 

[Cagliostro]

fseek(yourFilePtr,offset,seektype) where seektype can be:
SEEK_CUR - current position
SEEK_END - end of file
SEEK_SET - begin of file
for reading file you can use fscanf.
There also exists many easyest function in STL, MFC.
John Fill

ivfmd@mail.md