Seneca Groceries
You have been asked to write a program for a grocery store that will:
Start by allowing the entry of the current stock in the store, which it will save and
update during the day.
Switch to sales mode where it will act like a cash register and allow customers to
purchase things. It will update the inventory as items are sold and will produce an
itemized receiptfor the customer.
At the end of the day, print a summary of the sales, the inventory remaining and the
top sellers in each category.
Products for sale are identified by name, and are placed in a category and the category is
entered by its number:
1. produce
2. bakery
3. meat
4. dairy
5. baking
6. house wares
7. miscellaneous
Each item has a price and an indication of whether it is sold per unit or by weight which is
entered as 0 if sold by the number purchased or 1 if sold by weight. It also indicates how
much we have of this item either in units or by weight rounded down to the nearest
kilogram.
When we sell items, they are sold by weight in fractional Kg or by integral unit counts. When
the final amounts in inventory are calculated, they are rounded down to the nearest Kg for
items sold by weight. If a customer tries to purchase more of something than we have in
stock, we sell only the amount we have in stock. Most groceries are tax free except items in
the house wares and miscellaneous categories which are taxed at 13%.
The list of items being purchased is terminated by an item with the ID of 0. A sale with no
items added to it marks the end of sales which should be followed by the summary of the
day’s sales.
Input data should be checked for correct category range (1-7), sold by weight range (0-1). As
the stock is entered, each item is assigned a numeric identifier from 1 upwards in the order
the items are entered. For stock entry, you can assume that each item is only entered once.
When purchasing, the customer will identify the product to purchase by the identifier
assigned to it when it was entered in the stock and listed in the initial stock report in the ID
column. These product ID number should be checked to ensure that they are valid.
Below this section you will find:
main.c which is the main for the program. You must use this main.c for your
program without changes. This means that you will need to implement the data
structures it uses and the functions it uses in the files stock.h and stock.c. You
SHOULD create additional functions, other than the ones called from main, to create
a highly modular, well-designed program. Your code will be tested against this
main.c and your code must work and produce the expected output.
A sample execution of the program to which your program’s output should look very
similar.
Sample data which can be cut and pasted into the program for final testing. This is
the data which generated the sample output.
You are required to:
Place a comment at the top of both stock.h and stock.c listing the names of every
member of the group.
BONUS: (5%) if you read the existing stock from a file containing the test data with
the errors fixed. You will need to correct the errors in the data and place it in a file.
Then, you can read it from the file without the error checking that is done with the
manually typed version. You can change the value of the
constant STOCK_FROM_STDIN declared in main to allow you to read from a file.
Note that the sales will continue to be read from stdin, it is only the initial stock
which will be read from the file. This will change the output to show the initial
prompt for stock followed immediately the summary of the opening stock. The
typing of the stock will vanish as it is being read from a file.
main.c
#define _CRT_SECURE_NO_WARNINGS
#include
#include "stock.h"
#define MAX_STOCK_ENTRIES 100
/***************************************************************/
/* Students who are implementing the file reading version for */
/* bonus marks are allowed to change STOCK_FROM_STDIN to 0 */
/* to enable the program to read from a file. */
/***************************************************************/
#define STOCK_FROM_STDIN 1
int main(void)
{
struct StockRecord storeStock[MAX_STOCK_ENTRIES] = { {{0, 0,
0.0, 0}, 0, 0.0} };
struct SalesRecord saleItems[MAX_ITEMS_IN_SALE];
struct SalesRecord topSellers[5];
int numStockItems = 0, numSales = 0, numSaleItems,
totalSaleItems = 0, cat;
double sale, totalSales = 0.0;
// Read existing stock from stdin
printf("Enter current stock in format amount, category, price,
byWeight, name (0 amount to end):\n");
numStockItems = readStockItems(storeStock, MAX_STOCK_ENTRIES,
STOCK_FROM_STDIN);
printf("\n");
centreText(70, '*', " Seneca Groceries - Opening Stock ");
printf("\n");
centreText(70, '=', "");
printf("\n");
printStockReport(storeStock, numStockItems);
printf("\n");
centreText(70, '*', " Now in Sales Mode ");
printf("\n");
centreText(70, '=', "");
printf("\n");
do
{
numSaleItems = readSale(storeStock, numStockItems, saleItems);
if (numSaleItems > 0)
{
sale = printSalesReport(storeStock, saleItems,
numSaleItems);
totalSales += sale;
totalSaleItems += numSaleItems;
numSales++;
}} while (numSaleItems > 0);
printf("\n");
centreText(70, '*', " End of Day Summary ");
printf("\n");
centreText(70, '=', "");
printf("\n");
printf("%35s%8.2lf\n", "Cost of items sold before taxes",
totalSales);
printf("%35s%8d\n", "Number of Sales", numSales);
printf("%35s%8.2lf\n\n", "Average items per sale",
totalSaleItems / (double)numSales);
printf("\n");
centreText(70, '*', " Closing Stock ");
printf("\n");
centreText(70, '=', "");
printf("\n");
printStockReport(storeStock, numStockItems);
printf("\n");
for (cat = 0; cat < 5; cat++)
{
getTopSellers(storeStock, numStockItems, topSellers, 3, cat);
printTopSellers(storeStock, topSellers, 3, cat);
}
for (cat = 5; cat < NUM_CATS; cat++)
{
getTopSellers(storeStock, numStockItems, topSellers, 2, cat);
printTopSellers(storeStock, topSellers, 2, cat);
}
return 0;
}