Structured Programming Example Using fseek

/ * -------------------------------------------- * / / * File program: BACAACAK.C * / / * To view the contents of a file at random * / / * -------------------------------------------- * / # Include "stdio.h" # Include "conio.h"
   main () {
 struct
 {
  char title [26];
  char author [20];
  int number;
 Books} / * variable of type integer books * /
 FILE * pf; / * clever file * /
 char back;
 int nmr_record, hasil_baca;
 ofset_byte long int;
  
 clrscr ();
  
 / * Open file contains data yan book * /
 if ((pf = fopen ("DAFBUKU.DAT", "rb "))== NULL)
 {
  cputs ("File could not be opened! \ r \ n");
  exit (1);
 }
  
 / * Read record SCARA random * /
 re = 'Y';
 while (again == 'y' | | again == 'Y')
 {
  cputs ("\ r \ nNomor record of the data");
  cputs ("you want to know:");
  scanf ("% d", & nmr_record);
  
  ofset_byte = (nmr_record-1) * sizeof (book);
  fseek (pf, ofset_byte, SEEK_SET);
  
  hasil_baca = fread (& user, sizeof (book), 1, pf);
  if (hasil_baca == 0)
  {
   cprintf ("No record is not valid! \ r \ n");
   continue; / * return kewhile * /
  }
  cprintf ("title:% s \ r \ n", buku.judul);
  cprintf ("Author:% s \ r \ n", buku.pengarang);
  cprintf ("Book number:% d \ r \ n", buku.jumlah);
  
  cputs ("\ r \ nDo you want to look for more information (Y / T )?");
  re = getche ();
 }
 / * Close file * /
 fclose (pf); }