travel.c

This is code tutorial for image processing include:histogram,sketon....

                get_first_last_dates(its, &first_day, &last_day);
                print_accounting(date_string, name, ORN, 
                                 days, &lines, print_file,
                                 &first_day, &last_day,
                                 cash_advance, GTR, ts,
                                 its, ds, rs);
                lines = 0;
                fclose(print_file);
           
#ifdef UNIX_SYSTEM
                   printf("\nEnter the name of the printer:");
                   printf(" (e.g. GE02_SPARC, ps1, ps, etc.)");
                   printf("\n     ");
                   gets(printer_name);
                   sprintf(r, "lpr -P%s %s", 
                      printer_name, print_file_name);
                  system(r);
#endif
                   /* changed 21 April 1994 DP */
#ifdef DOS_SYSTEM
                   dos_print_file(print_file_name);
#endif
                unlink(print_file_name);
             }  /* ends if yes print */
             break;



                  /* Process old travel accounting */
          case 2:
             printf("\ncase 2");
             printf("\nEnter the data file name:");        
             gets(data_file_name);

             data_file = fopen(data_file_name, "r");
             if(data_file == '\0'){
                printf("\nERROR: Could not open data file %s",
                          data_file_name);
                exit(-1);
             }  /* ends opening data file */

             fread(name, (L*sizeof(char)), 1, data_file);
             fread(ORN,  (L*sizeof(char)), 1, data_file);
             fread(&cash_advance, sizeof(long), 1, data_file);
             GTR   = retrieve_GTRs(data_file);
             ts    = retrieve_transportation_cost(data_file);
             its   = retrieve_itinerarys(data_file);
             ds    = retrieve_daily_expenses(data_file, &days);
             rs    = retrieve_rental_expenses(data_file);
             fclose(data_file);

             printf("\nDo you want to edit ");
             printf("this accounting? (y or n)");
             gets(r);
             if(r[0] == 'y' || r[0] == 'Y'){
                review_accounting(name, ORN, &cash_advance,
                                  GTR, ts, its, ds, rs);
             }  /* ends edit accounting */




             printf("\nDo you want to print? (y or n)");
             gets(print);

             if(print[0] == 'y' || print[0] == 'Y'){

                tmpnam(print_file_name);                
                print_file = fopen(print_file_name, "wt");
                if(print_file == '\0'){
                   printf("\nERROR Could not open print file %s",
                           print_file_name);
                   exit(2);
                }  /* ends if could not open print file */

                get_first_last_dates(its, &first_day, &last_day);
                print_accounting(date_string, name, ORN, 
                                 days, &lines, print_file,
                                 &first_day, &last_day,
                                 cash_advance, GTR, ts,
                                 its, ds, rs);
                lines = 0;
                fclose(print_file);
#ifdef UNIX_SYSTEM
                   printf("\nEnter the name of the printer:");
                   printf(" (e.g. GE02_SPARC, ps1, ps, etc.)");
                   printf("\n     ");
                   gets(printer_name);
                   sprintf(r, "lpr -P%s %s", 
                      printer_name, print_file_name); 
                   system(r);
#endif
                /* changed 21 April 1994 DP */
#ifdef DOS_SYSTEM
                   dos_print_file(print_file_name);
#endif
                unlink(print_file_name);
             }  /* ends if yes print */




             printf("\nDo you want to save ");
             printf("this edited accounting? (y or n)");
             gets(r);
             if(r[0] == 'y' || r[0] == 'Y'){
 
                get_data_file_name(name, date_string, data_file_name);
                data_file = fopen(data_file_name, "w");
                if(data_file == '\0'){
                   printf("\nERROR: Could not create data file %s",
                             data_file_name);
                   exit(-1);
                }  /* ends opening data file */

                   /* save the data to the data file */
                fwrite(name, (L*sizeof(char)), 1, data_file);
                fwrite(ORN,  (L*sizeof(char)), 1, data_file);
                fwrite(&cash_advance, sizeof(long), 1, data_file);
                save_GTRs(GTR, data_file);
                save_transportation_cost(ts, data_file);
                save_itinerarys(its, data_file);
                save_daily_expenses(ds, data_file);
                fclose(data_file);
                printf("\n\nWrote your data to file: %s",
                       data_file_name);
             }  /* ends if save edited accounting */

             break;

          default:
             printf("\n\nSorry, cannot understand your ");
             printf("choice, try again.");
             break;
       }  /* ends switch choice */
   }  /* ends while not_finished */



      /* free up the memory you allocated */
   free(GTR);
   free(ts);
   free(its);
   free(ds);



}  /* ends main */
/*****************************************************/
/*****************************************************/
/*****************************************************/
/*PAGE review_accounting

   This function is the main routine for the
   review process.  It shows menus, interprets
   the responses and calls other functions to make
   changes as desired.
*/

review_accounting(name, ORN, cash_advance,
                  GTR, ts, its, ds, rs)
   char    name[], ORN[];
   long    *cash_advance;
   struct  daily_struct      *ds;
   struct  GTR_struct       *GTR;
   struct  itinerary_struct *its;
   struct  trans_struct     *ts;
   struct  rental_struct    *rs; 
{
   char r[L];
   int  choice, not_finished = 1;

   while(not_finished){
      show_review_menu();
      gets(r);
      choice = atoi(r);
      switch(choice){

         case 0:
            not_finished = 0;
            break;

         case 1: /* name and ORN */
            edit_name_orn(name, ORN);
            break;

         case 2: /* cash advance */
            edit_cash_advance(cash_advance); 
            break;

         case 3: /* GTR */
            edit_GTRs(GTR);
            break;

         case 4: /* Transportation cost */
            edit_trans_cost(ts);
            break;

         case 5: /* Itenerary */
            edit_itinerary(its);
            break;

         case 6: /* Daily Expenses */
            edit_daily_expenses(ds);
            break;

         case 7: /* Rental Car Use */
            edit_rental_expenses(rs);
            break;

         default:
            printf("\n\nSorry, cannot understand your");
            printf(" choice, try again.");
            break;
      }  /* ends switch choice */
   }  /* ends while not_finished */
}  /* ends review_accounting */
/*****************************************************/
/*****************************************************/
/*PAGE edit_name_orn

   This function allows the user to edit the
   traveller's name and ORN.
*/

edit_name_orn(name, ORN)
   char name[], ORN[];
{
   char r[L];
   int  choice, not_finished = 1;

   while(not_finished){
      printf("\n");
      printf("\n\t1. Name is %s", name);
      printf("\n\t2. ORN is %s", ORN);
      printf("\n\n\tEnter number to make a change, 0 to quit");
      printf("\n\t");
      gets(r);
      choice = atoi(r);
      switch(choice){

         case 0:
            not_finished = 0;
            break;

         case 1:
            get_name(name);
            break;

         case 2:
            get_orn(ORN);
            break;

         default:
            printf("\n\nSorry, cannot understand your");
            printf(" choice, try again.");
            break;
      }  /* ends switch choice */
   }  /* ends not_finished */
}  /* ends edit_name_ORN */
/*****************************************************/
/*****************************************************/
/*PAGE edit_cash_advance

   This function allows the user to edit the
   cash advance.
*/

edit_cash_advance(cash_advance)
   long *cash_advance;
{
   char r[L];
   int  choice, not_finished = 1;
   long temp;

   temp = *cash_advance;

   while(not_finished){
      printf("\n");
      printf("\n\t1. Cash advance is $%8.2f", dollars_of(temp));
      printf("\n\n\tEnter number to make a change, 0 to quit");
      printf("\n\t");
      gets(r);
      choice = atoi(r);
      switch(choice){

         case 0:
            not_finished = 0;
            break;

         case 1:
            printf("\n\tCash Advance Amount? ");
            temp = get_money();
            break;

         default:
            printf("\n\nSorry, cannot understand your");
            printf(" choice, try again.");
            break;
      }  /* ends switch choice */
   }  /* ends while not_finished */

   *cash_advance = temp;

}  /* ends edit_cash_advance */
/*****************************************************/
/*****************************************************/
/*PAGE edit_GTRs

   This function allows the user to edit the
   GTRs.
*/

edit_GTRs(GTR)
   struct GTR_struct *GTR;
{
   char   r[L];
   int    choice, not_finished = 1;
   long   temp;
   struct GTR_struct *g;

   g = GTR;
   while(not_finished){
      printf("\n");
      printf("\n\t1. GTR is $%8.2f", 
             dollars_of(g->GTR));
      printf("\n\n\tEnter 1 to change this GTR");
      printf("\n\tEnter 2 to go on to next GTR");
      printf("\n\t");
      gets(r);
      choice = atoi(r);

      if(choice == 1){
         printf("\nEnter new GTR:");
         temp   = get_money();
         g->GTR = temp;
      }  /* ends if choice == 1 */

      if(choice == 2){
         if(g->next == END_OF_LIST){
            printf("\nNo more advances to edit");
            not_finished = 0;
         }  /* ends if END_OF_LIST */
         else
            g = g->next;
      }  /* ends if choice == 2 */
   }  /* ends while not_finished */
}  /* ends edit_GTRs */
/*****************************************************/
/*****************************************************/
/*PAGE edit_trans_cost

   This function allows the user to edit the
   transportation costs.
*/

edit_trans_cost(ts)
   struct trans_struct *ts;
{
   char   r[L];
   int    choice, j, not_finished = 1;
   struct trans_struct *t;

   t = ts;
   while(not_finished){
      printf("\n");
      printf("\n\t1. Mode: %s", t->mode);
      printf("\n\t2. Carrier: %s", t->carrier);
      printf("\n\t3. Class: %s", t->travel_class);
      printf("\n\t4. Amount: $%8.2f", 
              dollars_of(t->amount));
      printf("\n\t5. Go on to the next transportation");
      printf("\n\t6. Quit editing transportation costs");
      printf("\n");
      printf("\n\tEnter the number to change:");
      gets(r);
      choice = atoi(r);
      switch(choice){

         case 1:
            printf("\n\tMode:");
            printf("(enter 0 to quit)");;
            gets(t->mode);
            break;

         case 2:
            printf("\n\tCarrier:");
            gets(t->carrier);
            break;

         case 3:
            printf("\n\tTravel Class:");
            gets(t->travel_class);
            break;

         case 4:
            printf("\n\tAmount:");
            t->amount = get_money();
            break;

         case 5:
            if(t->next == END_OF_LIST){
               printf("\n\nNo more to edit");
               not_finished = 0;
            }  /* ends if END_OF_LIST */
            else
               t = t->next;
            break;

         case 6:
            not_finished = 0;
            break;

         default:
            printf("\n\nSorry, cannot understand your");
            printf(" choice, try again.");
            break;

      }  /* ends switch choice */
   }  /* ends while not_finished */

}  /* ends edit_trans_cost */
/*****************************************************/
/*****************************************************/
/*PAGE edit_itinerary

   This function allows the user to edit the
   itinerary.
*/

edit_itinerary(its)
   struct itinerary_struct *its;
{
   char   r[L], s[L];
   int    choice, i, not_finished = 1;
   struct itinerary_struct *t;
   struct MDY_struct       dummy;

   t = its;
   while(not_finished){
      printf("\n");
      printf("\n\t1. Departure: %2d-%2d-%2d",
              t->depart_date.month,
              t->depart_date.day,
              t->depart_date.year);
      printf("\n\t2. Leaving: %s", t->leave_loc);
      printf("\n\t3. Time: %ld", t->depart_time);
      printf("\n\t4. Via: %s", t->depart_via);
      printf("\n\t5. Arrival: %2d-%2d-%2d",
              t->arrive_date.month,
              t->arrive_date.day,
              t->arrive_date.year);