I am writing this C program and I need help putting it into

I am writing this C++ program and I need help putting it into functions and outputting the answers to a file. Could you also check to see if my answer is correct?

/*
Program Directions :
    Last month Joe Purchased some stock in Acme Software, Inc. Here are the details of
    the purchase:

     * The number of shares that Joe purchased was 1,000.
     * When Joe purchased the stock, he paid $45.50 per share.
     * Joe paid his stock broker a commission that amounted to 2% of the amount he paid
        for the stock.

    Two weeks later joe sold the stock. Here are the details of the sale:
     
     * The number of shares that Joe sold was 1,000.
     * He sold the stock for $56.90 per share.
     * He paid his stock broker another commission that amounted to 2% of the amount
        he received for the stock.

    Write a program that displays the following information:

     * The amount of money Joe paid for the stock.
     * The amount of commission Joe paid his broker when he bought the stock.
     * The amount that Joe sold the stock for.
     * The amount of commission Joe paid his broker when he sold the stock.
     * Display the amount of profit that Joe made after selling his stock and paying
        the two commissions to his broker. (If the amount of profit that your program
        displays is a negative number, then Joe lost money on the transaction.)
*/

#include <iostream>
#include <iomanip>

using namespace std;

int main()
{
double sharesBought, stockPrice1, commission1, sharesSold, stockPrice2, commission2;
double total1, total2;

cout << \"\ ------------------------------------------\ \"
   << \"        Stock Transaction Program\ \"
   << \"\ ------------------------------------------\ \";

sharesBought = 1000;
sharesSold = 1000;
stockPrice1 = 45.50;
stockPrice2 = 56.90;
commission1 = (sharesBought * stockPrice1) * 0.02;
commission2 = (sharesSold * stockPrice2) * 0.02;
total1 = (sharesBought * stockPrice1) + commission1;
total2 = (sharesSold * stockPrice2) + commission2;

cout << setprecision(2) << fixed;
cout << \"Amount Joe paid for the stock: $\" << sharesBought * stockPrice1 << endl;
cout << \"Commission Joe paid to broker : $\" << commission1;
cout << \"\ -----------------------------\ \";
cout << \"Joe sold the stock for: $\" << sharesSold * stockPrice2 << endl;
cout << \"Commission Joe paid to broker : $\" << commission2 << endl;
cout << \"Profit: \" << total2 - total1 << \"\ \ \";

system(\"pause\");

return 0;
}

Solution

In the following methods this can be done

#include <fstream>   // For ifstream, ofstream

#include <iomanip>   // For setprecision()

#include <iostream> // For endl, fixed

using namespace std;

int main()

{

    // Open the input file for reading.

    ifstream fin(\"stock-in.txt\");

    // Read the input data from the input file stream.

    int shares;            

    double purchPriceShare, purchCommPct, sellPriceShare, double sellCommPct;     

    fin >> shares;

    fin >> purchPriceShare;

    fin >> purchCommPct;

    fin >> sellPriceShare;

    fin >> sellCommPct;

fin.close();

// Convert the percentages (which we read from the file in a form such as 2.5 to 0.025).

    purchCommPct = purchCommPct / 100; // Acceptable to write purchCommPct /= 100;

    sellCommPct = sellCommPct / 100; // Acceptable to write sellCommPct /= 100;

// Calculate the purchase price for all of the shares.

    double purchPrice = shares * purchPriceShare;

// Calculate the purchase commission.

    double purchComm = purchPrice * purchCommPct;

// Calculate the total purchase price, including the purchase commission.

    double totalPurchPrice = purchPrice + purchComm;

// Calculate the gross earnings from the sell.

    double grossEarnings = shares * sellPriceShare;

// Calculate the sell commission.

    double sellComm = grossEarnings * sellCommPct;

// Calculate the net earnings from sell.

    double netEarnings = grossEarnings - sellComm;

// Calculate the profit or loss from the sell.

    double profitLoss = netEarnings - totalPurchPrice;

// Open the output file for writing.

    ofstream fout(\"stock-out.txt\");

// Configure fout so real numbers are displayed in fixed point notation with 2 digits after the decimal

    // point. Configure fout so the numbers will be output right justified in the fields.

    fout << fixed << setprecision(2) << right;

// Now, output the data.

    fout << \"Number of Shares Purchased:     \" << setw(10) << shares << endl;

    fout << endl;

    fout << \"Purchase Price Per Share:      $\" << setw(10) << purchPriceShare << endl;

    fout << \"Purchase Price:                $\" << setw(10) << purchPrice << endl;

    fout << \"Purchase Commission (\" << (purchCommPct * 100) << \"%):   $\" << setw(10) << purchComm << endl;

    fout << \"Total Purchase Price:          $\" << setw(10) << totalPurchPrice << endl;

    fout << endl;

    fout << \"Sell Price Per Share:          $\" << setw(10) << sellPriceShare << endl;

    fout << \"Gross Earnings from Sell:      $\" << setw(10) << grossEarnings << endl;

    fout << \"Sell Commission (\" << (sellCommPct * 100) << \"%)        $\" << setw(10) << sellComm << endl;

    fout << \"Net Earnings from Sell:        $\" << setw(10) << netEarnings << endl;fout << endl;

    fout << \"Profit/Loss:                   $\" << setw(10) << profitLoss << endl;

// Close the output file.

    fout.close();

// Return 0 from main to indicate that the program terminated normally without errors.

    return 0;

}