You can adapt this from http://pastebin.com/1qq6YkdW , the checkout simulator. Y
ID: 3533825 • Letter: Y
Question
You can adapt this from http://pastebin.com/1qq6YkdW, the checkout simulator. You already have code that reads the data from the file into an array of structs. Now do the following:
1. 1. Write a function that takes a pointer to the array of structs to a function, along with the number of items in the array. Return a pointer to the item that costs the most. Thus your function declaration would look like this:
Product *findExpensive(Product *, int count);
2. 2. Within your main function, call the function and display all of the information on that item. That is, show the PLU, name, etc
Explanation / Answer
#include <iostream>
#include <iostream>
#include <fstream>
#include <string>
#include <cstdlib>
#include <vector>
using namespace std;
class Product
{
private:
int plu;
string productName;
int type;
double price;
double inventory;
public:
Product();
Product(int, string, int, double, double);
int getPLU();
string getProductName();
int getType();
double getPrice();
double getInventory();
double updateInventory(double);
};
Product *findExpensive(Product pr*, int count)
{
int i=0,x=0;
int max=0;
while(pr[i]!=null)
{
if(max<pr[i].getPrice())
{
max=pr[i].getPrice();
x=i;
}
}
return *pr[x];
}
Product::Product()
{
plu = 0;
productName = "none yet";
type = 0;
price = 0;
inventory = 0;
}
Product::Product(int pl, string pn, int t, double pr, double i)
{
plu = pl;
productName = pn;
type = t;
price = pr;
inventory = i;
}
int Product::getPLU()
{ return plu;}
string Product::getProductName()
{ return productName;}
int Product::getType()
{ return type;}
double Product::getPrice()
{ return price;}
double Product::getInventory()
{ return inventory;}
double Product::updateInventory(double quantity)
{
if (quantity > inventory)
cout << "This item is not in stock." << endl;
else inventory -= quantity;
return inventory;
}
Product inv[100]; //array of 100 objects
int c = 100; //max product is 100
int menu(void) //user options
{
int option;
cout << "Enter 1 to begin checkout or 0 to exit" << endl;
cin >> option;
return option;
};
void updateFile() //output to a new file
{
ofstream newInvFile("newinventory.txt");
for (int p = 0; p < c; p++)
{
newInvFile << inv[p].getPLU() << " " << inv[p].getProductName() << " " << inv[p].getType() << " " << inv[p].getPrice() << " " << inv[p].getInventory() << endl;
}
}
void checkout(void)
{
double total = 0;
double quantity;
int input;
int PLU = 0;
do
{
PLU = 0;
cout << "Enter PLU code or (0) to exit" << endl;
cin >> input;
if (input == 0)
break;
for (int p = 0; p < c; p++)
{
if (inv[p].getPLU() == input)
{
PLU = p;
break;
}
}
if (inv[PLU].getType() == 1)// Determine whether product is sold by weight
{
cout << "Weight: ";
}
else
{
cout << "Quantity: ";
}
cin >> quantity;
total += quantity * inv[PLU].getPrice();
inv[PLU].updateInventory(quantity);
}
while (input != 0);
cout << "Total: $" << total << endl;
if (total > 50) //apply discount if total is over $50
{
total = total * 0.95;
cout << "YAY! Your purchase of over $50 qualifies for a 5% discount. Total: $" << total << endl;
}
}
int main()
{
int plu;
string productName;
int type;
double price;
double inventory;
c = 0;
ifstream original ("product.txt"); //read from original product file
if (original.is_open())
{
while (!original.eof())
{
original >> plu >> productName >> type >> price >> inventory;
Product temp = Product(plu, productName, type, price, inventory);
inv[c] = temp;
c++;
}
original.close();
}
int option;
do
{
cout << "WELCOME!" << endl;
option = menu();
if (option == 1)
checkout();
else
updateFile();
}
while(option != 0);
temp=*findExpensive(inv, c);
cout<<"Most expensive item:- PLU:"<<temp.getPLU()<<" Name:"<<getProductName()<<" Type:"<<getType()<<" Price:"<<getPrice()<<" Inventory:"<<getInventory();
system ("pause");
}
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