I have posted this question previously but the answer doesn\'t compile. If someo

Question

I have posted this question previously but the answer doesn't compile. If someone could help I would greatly appreciate it. If you are the person who previously nswered and you make it compile. I will giive a thumbs up to this program and the one that did not compile. Thank you.

Write in C++.

The Bite-a Vite-a vitamin store needs an "expert" computer programmer to help keep track of their inventory. The store maintains all their vitamin stock information on disk. The data is organized as follows:

The first column contains the vitamin name (A, B, C, etc.)

The second column contains the unit price of a single jar of that particular vitamin.

The third column has the number of jars of that vitamin in the store.

For example:

Write a C++ program that will do the following:

1. Read data from the keyboard in the form

vitamin price quantity

2. Write and call a function that will return the total value of the store's inventory for that one vitamin product (unit_price * number_of_jars).

You will also calculate:

The average price of a vitamin

The total inventory (total number of jars)

Print the output so that it is organized as follows:

Vitamin Price Inventory Total Inventory

5. Write and call a function that will return the per unit price of a vitamin. The parameter to the function will include the vitamin name. (Hint use a vector or other container class).

--------------------------------------------------

The average price for a vitamin is: $9.98

The total store inventory is 104 jars of vitamins

Explanation / Answer

Complete Program:

#include <iostream>
#include <iomanip>
#include <fstream>
using namespace std;

double getTotalInventory(double unit_price, int number_of_jars);

int main()
{
ifstream infile;
ofstream outfile;

infile.open("data.txt");
if(!infile)
{
  cerr << "Input file cannot be opened.";
  exit(EXIT_FAILURE);
}

outfile.open("output.txt");

char vitamin;
double price;
int quantity;
double total_price = 0;
int total_quantity = 0;
double average_price = 0;
  

outfile << left << setw(12) << "Vitamin" << right << setw(12) << "Price" << setw(12) << "Inventory" << setw(20) << "Total Inventory" << endl;
outfile << "---------------------------------------------------------" << endl;
outfile << setprecision(2) << fixed;

infile >> vitamin;
while (infile)
{
  infile >> price >> quantity;
  double totalInventory = getTotalInventory(price, quantity);

  outfile << left << setw(12) << vitamin << right << setw(12) << price << setw(12) << quantity << setw(20) << totalInventory << endl;
  
  total_price += totalInventory;
  total_quantity += quantity;  

  infile >> vitamin;
}

if(total_quantity > 0)
  average_price = total_price / total_quantity;

outfile << " The average price for a vitamin is: $" << average_price << endl;
outfile << "The total store inventory is " << total_quantity << " jars of vitamins" << endl;

infile.close();
outfile.close();

system("pause"); // for visual studio
return 0;
}

double getTotalInventory(double unit_price, int number_of_jars)
{
return unit_price * number_of_jars;
}

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