/* item_list_add2.c
   Author: Murray Saul
   Date: March 18, 2008
   Purpose: Use multiple arrays to store
            both characters and ints...
*/

#define ARRAY_SIZE 3
#define ITEM_NUM_SIZE 4 + 1
#define ITEM_NAME_SIZE 40 + 1

int  enterItems(char itemNumber[][ITEM_NUM_SIZE],
                char itemName[][ITEM_NAME_SIZE],
                int itemQuantity[]);

void displayItems(char itemNumber[][ITEM_NUM_SIZE],
                  char itemName[][ITEM_NAME_SIZE],
                  int itemQuantity[]);

void clearInput();

#include<stdio.h>


main()
{

   FILE *fp_in;
   char itemNumber[ARRAY_SIZE][ITEM_NUM_SIZE];
   char itemName[ARRAY_SIZE][ITEM_NAME_SIZE];
   int  itemQuantity[ARRAY_SIZE];
   int i, numberOfItems;

   numberOfItems = enterItems(itemNumber, itemName, itemQuantity);
   displayItems(itemNumber, itemName, itemQuantity);

     fp_in = fopen("items.dat", "a");
     if (fp_in == NULL)
       printf ("Cannot open the \"items.dat\" database file\n");
     else
     {
       for (i=0; i < numberOfItems; i++)
            fprintf(fp_in, "%s;%s;%d\n", itemNumber[i], itemName[i], itemQuantity[i]);

       fclose(fp_in);  /* i.e. remember to close the file */

       } /* End of else statement */

} /* end of main program */

void clearInput()
{ 

  while (getchar() != '\n')
    ;

} /* end of clearInput() function */


int enterItems(char itemNumber[][ITEM_NUM_SIZE],
                char itemName[][ITEM_NAME_SIZE],
                int itemQuantity[])
{

     int i, result1, result2, result3;


        printf ("\n");
     
        for(i=0; i < ARRAY_SIZE; i++)
        {
           do
           {
              printf ("Item [%d] code: ", i+1);
              result1 = scanf("%[A-Z0-9][^\n]", itemNumber[i]);
              clearInput();
           } while (( result1 != 1 ) && printf ("Invalid - "));

           do
           {
              printf ("Item [%d] Description: ", i+1);
              result2 = scanf("%[^\n]", itemName[i]);
              clearInput();
           } while (( result2 != 1 ) && printf ("Invalid - "));

           do
           {
              printf ("Item [%d] QTY: ", i+1);
              result3 = scanf("%d", &itemQuantity[i]);
              clearInput();
           } while (( result3 != 1 ) && printf ("Invalid - "));

           printf ("\n");



         } /* End of for loop */
         
         return i;

} /* End of enterItems() function */

void displayItems(char itemNumber[][ITEM_NUM_SIZE],
                  char itemName[][ITEM_NAME_SIZE],
                  int itemQuantity[])
{

  int i;

  printf ("ITEM REPORT\n");
  printf ("===========\n\n");
  printf ("%-8s%-25s%8s\n", "Code", "Description", "Quantity");
  printf ("%-8s%-25s%8s\n", "----", "-----------------------", "--------");
  for (i=0; i < ARRAY_SIZE; i++)
    printf ("%-8s%-25s%8d\n", itemNumber[i], itemName[i], itemQuantity[i]);
  printf ("\n\n");

} /* End of displayItems() function */