I need help with this project, from start to finish. Programming Assignment 1 Yo
ID: 3727309 • Letter: I
Question
I need help with this project, from start to finish.
Programming Assignment 1
You will write, run, and test a C++ program to simulate the operation of a grocery store checkout system. Your program should first build a data structure to contain information on all the products available in the store. Then the program should print the cash register receipt for each customer.
Input
The input for this program has two sources: the inventory information is an input from a text file, and the customer transactions are inputs from the keyboard.
The information about each product carried by the store is listed on a single line in the inventory file "Invent.dat", in the following format:
<product number> escription> <price> <tax>
where is a five-digit positive (nonzero) integer, is a string of at most 12 characters with no embedded blanks, is a real number, and is a character ('T' if the product is taxable; 'N' if it is not taxable). The data in the inventory file is ordered from the smallest to the largest product number.
Customer transactions are input from the keyboard, in the following format:
<product number> <times>
where, is as described above, and is an integer in the range 1 to 100, indicating the quantity of this product desired. A zero input for indicates the end of the customer's order. (The store will soon be using a scanner to input the product number, but for now it is typed in by the cashier.)
Output
The program outputs should be written to a text file called "Receipts.out."
The inventory information is echo-printed to the output file.
The cash register receipt for each customer is written to the output file. The receipts should be nicely formatted, with the product description (not the product number), number of items, item price, and total price for each product printed on a single line. At the end of each customer's order, the subtotal for all items, amount of tax on taxable items, and total bill should be printed, clearly labeled. (The tax rate is 7.5% for taxable items.)
Processing
The program first reads in all of the inventory information from file "Invent.in." echo-printing the information to the output file.
The program then prompts the cashier to begin inputting the order for the first customer.
This customer's order is processed, and the receipt is printed to the output file.
After each customer's order is processed, the program asks the cashier if another customer is to be processed. If the answer is 'Y', the program sets up to process the next customer; if the answer is 'N', the program terminates with a friendly message.
Error Checking
The following input errors are possible and should be handled by an exception class:
Duplicate in inventory file. Write an error message to the output file and skip the second entry.
not in inventory file. Write an error message on the receipt, ignore that product number, and continue with the next item.
not in the specified range. Write an error message to the output file, ignore that line, and continue with the next item.
Example
From File "Invent.in":
11012 gallon-milk 1.99 N
11014 butter 2.59 N
11110 pie-shells 0.99 N
20115 laundry-soap 3.60 T
30005 homestyle-br 0.99 N
From keyboard (one customer):
11110 2
40012 3
20115 1
0
To "Receipts.out" file:
------------------------------------------------------
SEP 10, 1998 6:00 pm (* date and time optional *)
Customer 1
pie-shells 2 @ 0.99 1.98
*** item 40012 not in inventory ***
laundry-soap 1 @ 3.60 3.60 TX
Subtotal 5.58
Tax 0.27
Total 5.85
Data Structures
The inventory information can be stored in an array of product records. Assume that the maximum number of products is 50, for purposes of writing this program. You should specify this data structure as an ADT, as described in the chapter and define and implement a set of operations to encapsulate it. The ADT should be tested using a test driver.
Deliverables
Your design (either object-oriented or top-down)
A listing of the ADT
A listing of the test driver for the ADT
A listing of the test plan as input for the driver
A listing of the output from the test driver
A listing of your program
A listing of your test plan as input to the program
A listing of the output file
Explanation / Answer
#include <iostream>
#include <fstream>
#include <string>
#include <iomanip>
#include "Product.h"
using namespace std;
//Global variable
const double TAXamt = 0.075; //The tax amount is 7.5%
//Function Prototype
int binarySearch(Product inventory[][], int, int); //To search for the product to be purchased
int main()
{
//Declare variable
const int NUM_ROWS = 50; //Number of rows for the array; 50 products total
const int NUM_COLS = 4; //Number of columns for the array: product number, description, price, tax status
Product inventory[NUM_ROWS][NUM_COLS]; //An array of products
Product receipt[NUM_ROWS][NUM_COLS]; //An array for the receipt
ifstream inputFile;
ofstream outFile;
int count = 0, num, quant, prods;
double price, subtotal, total;
string item;
double itemPrice;
char itemTax, taxable;
//Open the file.
inputFile.open("C:\Users\Beverly\OneDrive\School\CISS 350\Week1_GroceryStore\Week1_GroceryStore\Inventory.txt");
if (!inputFile) //If the file cannot open, exit gracefully.
{
cout << "Error: File could not be opened." << endl;
exit(1);
}
//Initialize the array.
for (int row = 0; row < NUM_ROWS; row++)
{
for (int col = 0; col < NUM_COLS; col++)
{
inputFile >> inventory[NUM_ROWS][NUM_COLS];
}
}
//Close the file.
inputFile.close();
//Display the array
cout << " Welcome to Wideman Grocery! " << endl;
cout << "----------------------------------------" << endl;
cout << endl;
cout << "Product Number" << setw(15) << "Description" << setw(15) << "Price" << setw(8) << "Tax Status" << endl;
cout << "----------------------------------------" << endl;
for (count = 0; count < NUM_ROWS; count++)
cout << inventory[NUM_ROWS][NUM_COLS] << endl;
cout << endl;
cout << "----------------------------------------" << endl;
cout << endl;
//Determine how many products are being purchased
cout << "How many products are being purchased: ";
cin >> prods;
if (prods < 0)
{
cout << "Please enter a number greater than 0: ";
cin >> prods;
}
for (int i = 0; i < prods; i++)
{
cout << "Please enter the product number: " << endl;
cin >> num;
cout << "Please enter the quantity to be purchased: ";
cin >> quant;
//Search inventory array for the item
int element = binarySearch(inventory[NUM_ROWS][NUM_COLS], NUM_ROWS, num);
//If found, get product information **************************************************What do I do here?? I want to get the product info stored in the array inventory
item = inventory.getProd_Descr(element);
itemPrice = inventory.getPrice(element);
itemTax = inventory.getTax(element);
//Calculates the tax
if (taxable == 'T')
{
subtotal = (TAXamt)*(itemPrice * quant);
}
else //Non-taxable items
{
subtotal = (TAXamt)*(itemPrice * quant);
}
//Calculate the total for entire purchase.
total += subtotal;
//Add each product and info to the receipt
for (int numProd = 0; numProd < prods; numProd++)
{
receipt.setProd_num(num);
receipt.setProd_Descrip(item);
receipt.setPrice(itemPrice);
receipt.setTax(itemTax);
//*************************************************************How will I add the quantity of each??
}
}
//Print the receipt
//Open the file
outFile.open("C:\Users\Beverly\OneDrive\School\CISS 350\Week1_GroceryStore\Week1_GroceryStore\Receipt.txt");
if (!outFile) //If the file cannot open, print receipt on the screen and exit gracefully.
{
cout << "Error: File could not be opened." << endl;
cout << fixed << setprecision(2) << "Here is your receipt! Thanks for shopping at Wideman Grocery. " << endl;
cout << "Product Number" << setw(15) << "Description" << setw(15) << "Price" << setw(8) << "Tax Status" << endl;
cout << "--------------------------------------------------------------------------------------------------" << endl;
for (count = 0; count < NUM_ROWS; count++)
cout << receipt[NUM_ROWS][NUM_COLS] << endl;
cout << "Thank you. Have a nice day." << endl;
exit(1);
}
outFile << fixed << setprecision(2) << "Here is your receipt! Thanks for shopping at Wideman Grocery. " << endl;
outFile << "Product Number" << setw(15) << "Description" << setw(15) << "Price" << setw(8) << "Tax Status" << endl;
outFile << "--------------------------------------------------------------------------------------------------" << endl;
cout.setf(ios::left);
for (count = 0; count < NUM_ROWS; count++)
cout << receipt[NUM_ROWS][NUM_COLS] << endl;
outFile << "TOTAL " << setw(60) << "$" << total << endl;
outFile << "Thank you. Have a nice day." << endl;
//Close the file
outFile.close();
//Free Memory
delete[] inventory;
delete[] receipt;
return 0;
} //End of main()
//*****************************************************************************************
//Binary Search of the array to find the right product
int binarySearch(Product inventory[][NUM_COLS], int NUM_ROWS, int num)
{
int first = 0, //First array element
last = NUM_ROWS - 1, //Last array element
middle, //Midpoint of search
position = -1; //Position of search value
bool found = false; //Flag
while (!found && first <= last)
{
middle = (first + last) / 2; //Calculate midpoint
if (inventory[NUM_ROWS][NUM_COLS] == num) //If value is found at mid
{
found = true;
position = middle;
}
else if (inventory[NUM_ROWS][NUM_COLS] > num) //If value is in lower half
last = middle - 1;
else
first = middle + 1; //If value is in upper half
}
return position;
} //End of binarySearch
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