Reading a file usine fseek() in C

[jim mcnamara]

In simple statements - you want to read the last record of the file.

Assuming a file with at least one record---------------

   #define ZERO 0
   int result;
   result = fseek(fp,ZERO,SEEK_END);
   // file pointer is on the last record, let's see where that is
   result = ftell(fp);
   result -= sizeof(struct data);  // calculate one back
   result = fseek(fp,result,SEEK_SET);
   // file pointer is now on first byte of last record

fread() reads from the file pointer postion on further into the file. NEVER backwards.


Okay?