#include <iostream>
#include <iomanip>
#include <fstream>
#include <string>
#include <cstdlib>
#include <cmath>
using namespace std;

const int NumRows = 50;
const int NumCols = 7;

int getDataFromFile(int [][NumCols], const string& filename);
void printData(int [][NumCols], int NumRows);
int getMonthNumberFromString(const string& month);
string getMonthFromNumber(int num);

int main()
{
    int data[NumRows][NumCols];
    int numNumRowsFromFile;
    string filename("appledata.txt");
    numNumRowsFromFile = getDataFromFile(data,filename);
    printData(data,numNumRowsFromFile);
}

// returns number of records read into array
int getDataFromFile(int data[][NumCols], const string& filename)
{
    ifstream fin(filename.c_str());
    int month, day, year;
    int recordCount = 0;    // counter for number of records in input file
    float floatTemp;
    int intTemp;
    char commaBuffer[5];

    if (!fin)
    {
        cerr << "Unable to open file " << filename << endl;
        exit(1);
    }

    // discard headings
    string buffer;
    getline(fin,buffer);

    while (!fin.eof())
    {
        // get month
        fin >> buffer;
        if (fin.eof() || recordCount == NumRows)
            break;
        month = getMonthNumberFromString(buffer);

        // get the day of the month
        fin.get(commaBuffer, sizeof(commaBuffer),',');
        fin.get();
        day = atoi(commaBuffer);

        // get the year
        fin >> year;

        data[recordCount][0] = 10000 * year + 100 * month + day;

        // Get next 5 float columns
        for (int i = 1; i <= 5; i++)
        {
            fin >> floatTemp;
            data[recordCount][i] =
                static_cast<int>(round(floatTemp*100));
        }

        // Get volume, remove commas
        fin.getline(commaBuffer, sizeof(commaBuffer),',');
        data[recordCount][6] = 1000000 * (atoi(commaBuffer) % 100);
        fin.getline(commaBuffer, sizeof(commaBuffer),',');
        data[recordCount][6] += 1000 * atoi(commaBuffer);
        fin >> intTemp;
        data[recordCount][6] += intTemp;
        recordCount++;
    }
    return recordCount;
}

// Returns the month number for month string
int getMonthNumberFromString(const string& month)
{
    if (month == "Jan")
        return 1;
    if (month == "Feb")
        return 2;
    if (month == "Mar")
        return 3;
    if (month == "Apr")
        return 4;
    if (month == "May")
        return 5;
    if (month == "Jun")
        return 6;
    if (month == "Jul")
        return 7;
    if (month == "Aug")
        return 8;
    if (month == "Sep")
        return 9;
    if (month == "Oct")
        return 10;
    if (month == "Nov")
        return 11;
    if (month == "Dec")
        return 12;
    return 0;
}

// Returns the month string for the month number
string getMonthFromNumber(int num)
{
    const string month[12] =
       {"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep",
        "Oct","Nov","Dec"};
    return month[num-1];
}

// Prints the array values in the original format
void printData(int data[][NumCols], int NumRows)
{
    int monthNum;
    cout << setprecision(2) << fixed << setfill('0');
    for (int i = 0; i< NumRows; i++)
    {
        // Print date
        monthNum =   data[i][0] / 100 % 100;
        cout << getMonthFromNumber(monthNum) << ' '
             << setw(2) << data[i][0]%100
             << ", " << data[i][0] / 10000 << '\t';

        // Print 5 $ floating point columns
        for (int col = 1; col <= 5 ; col++)
            cout << data[i][col]/100.f << '\t';

        // Print volume data with commas
        cout << data[i][6]/1000000 << ',' << setw(3) << data[i][6]/1000 % 1000 << ','
             << setw(3) << data[i][6] % 1000 << endl;
    }
}