main.cpp

#include <iostream>
#include "stdio.h"
#include "Answer.h"
#include "Question.h"
#include <vector>
#include "time.h"

void waitForEnter()
{
    while(1)
    {
        if( '\n' == getchar() )
        {
            break;
        }
    }
    return;
}

int main()
{
    int questionsAnswered = 0;
    int score = 0;
    int answeredNumber = -1;
    Answer qOneAnswerOne("5", true);
    Answer qOneAnswerTwo("6", false);
    Answer qOneAnswerThree("-1", false);
    std::vector<Answer> qOneAnswers;
    qOneAnswers.push_back(qOneAnswerOne);
    qOneAnswers.push_back(qOneAnswerTwo);
    qOneAnswers.push_back(qOneAnswerThree);
    Question questionOne("What is 2+3?", qOneAnswers);

    Answer qTwoAnswerOne("5", false);
    Answer qTwoAnswerTwo("6", true);
    Answer qTwoAnswerThree("-1", false);
    std::vector<Answer> qTwoAnswers;
    qTwoAnswers.push_back(qTwoAnswerOne);
    qTwoAnswers.push_back(qTwoAnswerTwo);
    qTwoAnswers.push_back(qTwoAnswerThree);
    Question questionTwo("What is 2x3?", qTwoAnswers);

    Answer qThreeAnswerOne("42", true);
    Answer qThreeAnswerTwo("55", false);
    Answer qThreeAnswerThree("huh?", false);
    std::vector<Answer> qThreeAnswers;
    qThreeAnswers.push_back(qThreeAnswerOne);
    qThreeAnswers.push_back(qThreeAnswerTwo);
    qThreeAnswers.push_back(qThreeAnswerThree);
    Question questionThree("What is the answer to Life the Universe and Everything?", qThreeAnswers);

    std::vector<Question> lstQuestions;
    lstQuestions.push_back(questionOne);
    lstQuestions.push_back(questionTwo);
    lstQuestions.push_back(questionThree);

    srand(time(NULL));
    bool exitRequested = false;

    while(!exitRequested)
    {

        Question* ptrCurrentQuestion = &lstQuestions[rand()% (int) lstQuestions.size()];

        ptrCurrentQuestion->displayQuestion();
        ptrCurrentQuestion->displayAnswerOptions();

        std::cout << "Enter your answer or -1 to exit: ";
        while( !(std::cin >> answeredNumber) || (answeredNumber < -1) ||
            (answeredNumber > (int) ptrCurrentQuestion->getAnswers().size()-1) )
        {
            std::cin.clear(); //clear the error
            std::cin.ignore(10000, '\n'); //ignore the entered garbage
            std::cout << "Please enter a valid answer: ";
        }

        if(answeredNumber == -1)
        {
            exitRequested = true;
        }
        else if(ptrCurrentQuestion->isRightAnswer(answeredNumber))
        {
            std::cout << "Correct! :)\n";
            score++;
            questionsAnswered++;
        }
        else
        {
            std::cout << "Incorrect :/\n";
            questionsAnswered++;
        }

        std::cout << "Score: " << score << "  ";
        std::cout << "Questions Answered: " << questionsAnswered << std::endl;
    }
    std::cin.ignore(10000, '\n');
    std::cout << "Press enter to exit...";
    waitForEnter();


}