#include <iostream>
#include <string>

using namespace std;

enum MonthT {JANUARY, FEBRUARY, MARCH, APRIL, MAY, JUNE, JULY, AUGUST,
             SEPTEMBER, OCTOBER, NOVEMBER, DECEMBER, NO_MONTH};

const MonthT FIRST_MONTH = JANUARY;
const MonthT LAST_MONTH = DECEMBER;
const int MONTHT_SIZE = 12;

string MonthTToString(MonthT m);
MonthT NextMonth(MonthT m);
MonthT StringToMonthT(string month);
void CommentOnMonth(MonthT month);
void GetMonthName(string & name);

int main () {
    MonthT i,month;
    string input;
    MonthT randomMonth;

    // initialize the random number generator exactaly once
    srand(time(NULL));

    //I don't rally like this.
    for(i=JANUARY; i<= DECEMBER;i= MonthT(i + 1)) {
       cout << "Month number " << i << " is " << MonthTToString(i) << endl;
    }
    cout << endl << endl;
 
    // I like this much bettter
    for(i=FIRST_MONTH; i<= LAST_MONTH; i = NextMonth(i)) {
       cout << "Month number " << i << " is " << MonthTToString(i) << endl;
    }
    cout << endl << endl;

    // look you have to prime the pump here too!
    GetMonthName(input);
    while (input != "QUIT") {
       month = StringToMonthT(input);
       if (month == NO_MONTH) {
          randomMonth = MonthT(rand() % MONTHT_SIZE);
          cout << " That is not a valid month, did you mean " 
	       <<  MonthTToString(randomMonth) << "?" << endl;
       } else {
          CommentOnMonth(month);
       }
       cout << endl;
       GetMonthName(input);
    }

    return 0;
}


string MonthTToString(MonthT m){
    string returnValue;
    switch (m) {
        case JANUARY:
             returnValue = "January";
	     break;
	case FEBRUARY:
             returnValue = "February";
	     break;
	case MARCH:
             returnValue = "March";
	     break;
	case APRIL:
             returnValue = "April";
	     break;
	case MAY:
             returnValue = "May";
	     break;
	case JUNE:
             returnValue = "June";
	     break;
	case JULY:
             returnValue = "July";
	     break;
	case AUGUST:
             returnValue = "August";
	     break;
	case SEPTEMBER:
             returnValue = "September";
	     break;
        case OCTOBER:
             returnValue = "October";
	     break;
        case NOVEMBER:
             returnValue = "November";
	     break;
        case DECEMBER:
             returnValue = "December";
	     break;
    }
    return returnValue;
}

MonthT StringToMonthT(string month){
    MonthT returnValue=NO_MONTH;
    int i;

    // make it all lower case, and stop if there is a  non-alpha character
    for(i=0; i<month.size(); i++) {
       if (!isalpha(month[i])) {
         cout << month[i] << " is not valid in a month name." << endl;
       }
       month[i] = tolower(month[i]);
    }

    if ("january" == month) {
       returnValue = JANUARY;
    } else if ("february" == month) {
       returnValue = FEBRUARY;
    } else if ("march" == month) {
       returnValue = MARCH;
    } else if ("april" == month) {
       returnValue = APRIL;
    } else if ("may" == month) {
       returnValue = MAY;
    } else if ("june" == month) {
       returnValue = JUNE;
    } else if ("july" == month) {
       returnValue = JULY;
    } else if ("august" == month) {
       returnValue = AUGUST;
    } else if ("september" == month) {
       returnValue = SEPTEMBER;
    } else if ("october" == month) {
       returnValue = OCTOBER;
    } else if ("november" == month) {
       returnValue = NOVEMBER;
    } else if ("december" == month) {
       returnValue = DECEMBER;
    }
 
    return returnValue;
}

MonthT NextMonth(MonthT m){
    int nextValue;
    MonthT returnMonth = NO_MONTH;

    nextValue = int(m) + 1;
    if (nextValue >= FIRST_MONTH && nextValue <= LAST_MONTH) {
        returnMonth = MonthT (nextValue);    
    } 
    return returnMonth;
}

void CommentOnMonth(MonthT month) {
    if (JUNE == month || JULY == month || AUGUST == month) {
        cout << "I really like the month of " << MonthTToString(month) 
             << "!" <<  endl;
    } else if (month == APRIL || MAY || SEPTEMBER || OCTOBER) {
        cout << MonthTToString(month) << " is a mild month, not too bad"
             << endl;
    } else {
        cout << MonthTToString(month) << ", look out, SNOW!"<< endl;
    }
}

void GetMonthName(string & name){
    int i;

    cout << " Enter a month name (or QUIT to quit) =>";
    cin >> name;

    for(i=0;i<name.size();i++) {
       name[i] = toupper(name[i]);
    }

    return;
}