Simple Flashcard-like App

Version1.cpp

#include <iostream>
#include <fstream>
#include <stdlib.h>
#include <string>

using namespace std;

//Load and Display Functions
void loadQuestions();
void displayQuestion(int);
void displayAllQuestions();

//Write and Create Functions
void firstTimePopulate();
void createNewQuestion();
void writeQuestions();


//Global Variables
struct Question{
	char *question;
	char *answer;
} questions[100];

char * fileName;
int numQuestions;


int main() {
	cout<<"Specify your questions file:";
	cin.getline(fileName = new char[128], 128);
	loadQuestions();

	int choice;
	while(choice != 4){
		cout<<"\n\nWhat would you like to do?\n"
				"0. Display All Questions\n"
				"1. Add Questions\n"
				"2. Ask 10 Questions\n"
				"3. Questions File Info\n"
				"4. Exit"<<endl;
		cin>>choice;
		cin.get();

		if (choice == 0){
			displayAllQuestions();
		} else if (choice == 1){
			createNewQuestion();
		} else if (choice == 2){
			for (int reps = 0; reps < 10; reps++)
				displayQuestion(rand() % numQuestions);
		} else if (choice == 3)
			cout<<"You have "<<numQuestions<<" questions in your file "<<fileName<<endl;

	}

	cout<<"Exiting...";
	return 0;
}



void loadQuestions(){
	ifstream readFile;

	readFile.open(fileName);

	if (readFile.is_open() == false){
		readFile.close();
		numQuestions = 0;
		firstTimePopulate();
		return;
	}

	numQuestions = 0;
	while(!readFile.eof() && numQuestions < 100){
		readFile.getline(questions[numQuestions].question = new char[128], 128);
		readFile.getline(questions[numQuestions].answer = new char[128], 128);

		if (*questions[numQuestions].question != '\0')
			numQuestions++;
	}

	readFile.close();
}

void displayQuestion(int questionNumber){
	cout<<"Q: "<<questions[questionNumber].question<<endl;
	cin.get();
	cout<<"A: "<<questions[questionNumber].answer<<endl;
	cin.get();
}

void displayAllQuestions(){
	cout<<"Questions in "<<fileName<<endl;
	for (int i = 0; i < numQuestions; i++){
		cout<<"Q: "<<questions[i].question<<endl;
		cout<<"A: "<<questions[i].answer<<endl<<endl;
	}
}

void firstTimePopulate(){
	cout<<"It looks like you have zero questions in your question file!"<<endl;
	cout<<"Lets add a new question..."<<endl;
	createNewQuestion();
}

void createNewQuestion(){
	cout<<"What would you like your question to be?"<<endl;
	cin.getline(questions[numQuestions].question = new char[128], 128);
	cout<<"What would you like your answer to be?"<<endl;
	cin.getline(questions[numQuestions].answer = new char[128], 128);
	numQuestions++;
	writeQuestions();
}

void writeQuestions(){
	ofstream writeFile;

	writeFile.open(fileName);

	int i = 0;
	while (i < numQuestions){
		if (*questions[i].question != '\0'){
			writeFile<<questions[i].question<<"\n";
			writeFile<<questions[i].answer<<"\n";
		}
		i++;
	}

	writeFile.close();
}