Increment File Pointer In A Text File

[aditigupta]

HI...
Actually i m trying to move my file pointer from one line to another line but m not able to do so by using fseek because i dont know the offset.......

so is there anybody who can help........

thanks

[Silent1Mezzo]

HI...
Actually i m trying to move my file pointer from one line to another line but m not able to do so by using fseek because i dont know the offset.......

so is there anybody who can help........

thanks

Are you just going to the next line?

[aditigupta]

no i want to move to any line from the present file pointer position....... .. is there any way out.......

[weaknessforcats]

Do you have a flat file? That is, are all of the records the sam length??

If so, you can calculate an offset from the beginning of the file and seek to that location.

If not, you will have to start at the beginning of the file and read it character by character counting the end of record characters (probably \n). As you find an end of record character, the next record starts at the next byte. Seek to that byte.

I urgently recommend a flat file for this type of random hopping about. Further, if you have to change the data and the records are different lengths, then you simply can't do it without corrupting the file.