#include <iostream>
#include <string>

using namespace std;

//Prototypes go here
double calc(int rainfall[], int totalRainfall, double averageRainfall);
void output(int totalRainall, double averageRainfall, int rainHigh, int rainLow, string months[], string monthHigh, string monthLow);

int main()
{
    //Variables go here
    string months[12] = {"January", "Feburary", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"};
    string monthHigh = " ";
    string monthLow = " ";
    char error_ch = ' ';
    char again = ' ';

    int rainfall[12] = {0};
    int rainHigh = 0;
    int rainLow = 500000;
    int totalRainfall = 0;
    double averageRainfall = 0;

    for(int i = 0; i < 12; i ++)
    {
        cout << "How much rain was collected in " << months[i] << "?" << endl;
        cin >> rainfall[i];

        if(cin.fail())
        {
            cin.clear();
            cin >> error_ch;
            cout << endl << "You used a letter please use a number instead." << endl;
            cout << endl;
            cout << "Repeat enter." << endl;
            if(i == 0)
            {
                main();
            }
            else if(i > 0)
            {
                i--;
            }
        }

        if(rainfall[i] > rainHigh)
        {
            rainHigh = rainfall[i];
            monthHigh = months[i];
        }
        if(rainfall[i] < rainLow)
        {
            rainLow = rainfall[i];
            monthLow = months[i];
        }
    }
    averageRainfall = calc(rainfall, totalRainfall, averageRainfall);
    output(totalRainfall, averageRainfall, rainHigh, rainLow, months, monthHigh, monthLow);

    system("Pause");
    system("cls");

    //Runs the program again
    cout << "Would you like to run this program again? y or n: " << endl;
    cin >> again;
    again = tolower(again);

    if(again == 'y')
    {
        system("cls");
        main();
    }
    else
    {
        return 0;
    }
}

double calc(int rainfall[], int totalRainfall, double averageRainfall)
{
    for(int i = 0; i < 12; i ++)
    {
        totalRainfall = rainfall[i] + totalRainfall;
    }

    averageRainfall = totalRainfall / 12;

    return averageRainfall;
}

void output(int totalRainfall, double averageRainfall, int rainHigh, int rainLow, string months[], string monthHigh, string monthLow)
{
    cout << endl;

    cout << "Over the 12 months recorded the average rainfall for the year was " << averageRainfall << "." << endl << endl;

    cout << "Over the 12 month period the highest recorded rainfall is: " << rainHigh << endl << " which was during the month of " << monthHigh << "." << endl << endl;

    cout << "Over the 12 month period the lowest recorded rainfall is: " << rainLow << endl << "  which was during the month of" << monthLow << "." << endl << endl;

}