push_back error

[Awesomeness]

So, I'm writing a program that is supposed to take in a text file with a bunch of different types of questions and ask the user them. Kind of like a trivia game.
The text file is formatted a certain way so that the first 3 letters indicates what kind of question the number is how many points and then the question, followed by the correct answers. like -

FIB 1 What is the name of Han Solo's ship Millennium _____ : Falcon
MC3 1 The young Jedi Knight, Anakin Skywalker, becomes who in Star Wars? : Darth Vader : Ben Kenobi : The Emperor
TOF 1 Han was the first person in the moves to be kissed by Leia : False

It's supposed to read each line, determine what kind of question it is and then store it into a container of "TriviaQuestions". I've most of it I think but when I'm trying to use push_back it gives me no instance of overloaded function "std::vector<_Ty, _Alloc>::push_back [with _Ty=TriviaQuestions, _Alloc=std::allocator<TriviaQuestions>]" matches the argument list

I feel like I"m doing something really simple wrong but I can't seem to find it. 47
I have a .h and .cpp file as well.

  Main -
#include <iostream>
#include <string>
#include <fstream>
#include <vector>
#include <algorithm>
#include "TriviaQuestions.h"

using namespace std;

int main()
{
	ifstream triviaFile;
	string file, line;
	vector <TriviaQuestions> questions; 

		triviaFile.open("Questions.txt");
		cout << "File Opened";
	
	while (getline(triviaFile, line))
	{
		if (true)
		{
			string ln = string(0);
			string statement = ln.substr(4, ln.length() - 4);

			if (ln.substr(0, 3) == "FIB")
				questions.push_back(new fillInBlank(statement));
		}
	}
	
}

.h -
#include <string>
#include <vector>
using namespace std;
class TriviaQuestions
{

public:
	TriviaQuestions();
	TriviaQuestions(const string&);
	 
	virtual int getMax(); 
	virtual int askQuestion() ;

protected: 
	int points;
	string question;
	string answer;
};

//Fill In The Blank

class fillInBlank: public TriviaQuestions
{
private: string answer;
public:
	fillInBlank();
	
	int getMax(); 
	int askQuestion();
	fillInBlank(const string&);
	
};

//3-Part Multiple Choice
class multipleChoice3 : public TriviaQuestions
{
private: 
	string answer;
	vector<string> options;
public:
	multipleChoice3();
	multipleChoice3(int, string);
	int getMax();
	int askQuestion();
	multipleChoice3(const string&);;
};

//4-part multiple choice
class multipleChoice4 : public TriviaQuestions
{
private:
	string answer;
	vector<string> options;
public:
	multipleChoice4();
	
	int getMax();
	int askQuestion();
	multipleChoice4(const string&);
};

//True or False

class trueOrFalse : public TriviaQuestions
{
private:
	string answer;
public:
	trueOrFalse();
	trueOrFalse(const string&);
	
	int getMax();
	int askQuestion();
};

//numeric-type question

class numeric : public TriviaQuestions
{
private:
	string answer;
public:
	numeric();
	numeric(const string&);
	int getMax();
	int askQuestion();
};


#include "TriviaQuestions.h"
#include <iostream>
#include <algorithm>
#include <string>
using namespace std;

TriviaQuestions::TriviaQuestions()
{
	points = 1;
	question = "Unknown";
}
TriviaQuestions::TriviaQuestions(const string& statement)
{
	int colon = statement.find(':'); 
	points = statement[0] - '0'; 
	question = statement.substr(2, colon - 2); /
	answer = statement.substr(colon + 2, statement.length() - colon - 2); 

}


int TriviaQuestions::askQuestion()
{
	cout << question;
	string input;

	while (true)
	{
		getline(cin, input);
		if (input == answer)
			return points;
	}
	return 0;
}
//FILL IN THE BLANK
fillInBlank::fillInBlank()
{
	points = 1;
	question = "Unknown";
}


fillInBlank::fillInBlank( const string statement)
{
	int colon = statement.find(':');
	points = statement[0] - '0'; 
	question = statement.substr(2, colon - 2); 
	answer = statement.substr(colon + 2, statement.length() - colon - 2); 

}

int fillInBlank::askQuestion()
{
	cout << question;
	string input;

	while (true)
	{
		getline(cin, input);
		if (input == answer)
			return points;
	}
	return 0;
}
//3-PART MULTIPLE CHOICE

multipleChoice3::multipleChoice3()
{
	points = 1;
	question = "Unknown";
}

multipleChoice3::multipleChoice3(const string& statement)
{
	int answerStart = statement.find(':');
	int answerEnd = statement.find(':', answerStart - 2);

	points = statement[0] - '0';
	question = statement.substr(2, answerStart - 2);
	options = vector<string>(3);

	for (int i = 0; i < 3; ++i)
	{
		if (answerEnd == string::npos)
		{
			options[i] = statement.substr(answerStart + 2, statement.length() - answerStart - 1);
			options[i].erase(remove(options[i].begin(), options[i].end(), '\n'), options[i].end());
		}

		else
		{
			options[i] = statement.substr(answerStart + 2, answerEnd - answerStart - 3);
			options[i].erase(std::remove(options[i].begin(), options[i].end(), '\n'), options[i].end());
		}
		answerStart = answerEnd;
		answerEnd = statement.find(':', answerStart + 1);

	}
	answer = options[0];
}

int multipleChoice3::askQuestion()
{
	cout << "This is a 3-part Multiple Choice question worth" << points << "points" << endl;
	cout << question << endl;

	random_shuffle(options.begin(), options.end()); //Shuffles the answers

	//PRints out the different options
	cout << "A: " << options[0] << endl;
	cout << "B: " << options[1] << endl;
	cout << "C: " << options[2] << endl;

	string input; //User answer

	while (true)
	{
		getline(cin, input);
		if (input == answer)
			return points;
		else
			break;
	}
	return 0;

}
	


//4-PART MULTIPLE CHOICE

multipleChoice4::multipleChoice4()
{
	points = 1;
	question = "Unknown";
}

multipleChoice4::multipleChoice4(const string& statement)
{
	int answerStart = statement.find(':');
	int answerEnd = statement.find(':', answerStart - 2);

	points = statement[0] - '0';
	question = statement.substr(2, answerStart - 2);
	options = vector<string>(4);

	for (int i = 0; i < 4; ++i)
	{
		if (answerEnd == string::npos)
		{
			options[i] = statement.substr(answerStart + 2, statement.length() - answerStart - 1);
			options[i].erase(remove(options[i].begin(), options[i].end(), '\n'), options[i].end());
		}

		else
		{
			options[i] = statement.substr(answerStart + 2, answerEnd - answerStart - 3);
			options[i].erase(std::remove(options[i].begin(), options[i].end(), '\n'), options[i].end());
		}
		answerStart = answerEnd;
		answerEnd = statement.find(':', answerStart + 1);

	}
	answer = options[0];
}

int multipleChoice4::askQuestion()
{
	cout << "This is a 4-Part multiple choice question worth " << points << " points" << endl;
	cout << question;

	random_shuffle(options.begin(), options.end());

	cout << "A: " << options[0] << endl;
	cout << "B: " << options[1] << endl;
	cout << "C: " << options[2] << endl;
	cout << "D: " << options[3] << endl;

	string input;
	while (true)
	{
		getline(cin, input);
		if (input == answer)
			return points;
		else
			break;
	}
	return 0;
}

//TRUE OR FALSE

numeric::numeric()
{
	points = 1;
	question = "Unknwon";
}
//TRUE OR FALSE

numeric::numeric(const string& statement)
{
	int answerStart = statement.find(':');
	points = statement[0] - '0'; //Finds points on the line
	question = statement.substr(2, answerStart - 2); 
	answer = statement.substr(answerStart + 2, statement.length() - answerStart-2);
	answer.erase(remove(answer.begin(), answer.end(), '\n'), answer.end());
}

int numeric::askQuestion()
{
	cout << "This is a numeric question worth " << points << " points";
	cout << endl << question << endl;
	string input;
	while (true)
	{
		if (input == answer)
			return points;
		else
			break;
	}
}


//NUMERIC QUeSTIONS

trueOrFalse::trueOrFalse()
{
	points = 1;
	question = "unknwon";
}

trueOrFalse::trueOrFalse(const string& statement)
{
	int answerStart = statement.find(':');
	points = statement[0] - '0'; 
	question = statement.substr(2, answerStart - 2);
	answer = statement.substr(answerStart + 2, statement.length() - answerStart - 2);
	answer.erase(remove(answer.begin(), answer.end(), '\n'), answer.end());
}

int trueOrFalse::askQuestion()
{
	cout << "This is a True Or False question worth " << points << " points" << endl;
	cout << "A. True" << endl;
	cout << "B. False" << endl;

	string input;
	while (true)
	{
		if (input == answer)
			return points;
		else
			break;
	}

}

To be honest, I don't know if the .cpp part even does what it's supposed to since I can't get it to run.
Any help would be appreciated. Thanks.

[Handy Andy]

Hello Awesomeness,

To star with putting the green check on your message tells everyone that you are finished. You need to edit your post and change the icon.

Posting the mostly complete error message is good, but is does not say what line number or file it is to.

Now it will take more time to load up the program and compile it to see what is going wrong.

Andy

[seeplus]

As one file which compiles with no errors (but with warnings):

#include <string>
#include <vector>
#include <iostream>
#include <fstream>
#include <algorithm>
#include <chrono>
#include <random>
using namespace std;

const auto seed = std::chrono::system_clock::now().time_since_epoch().count();

class TriviaQuestions
{
public:
	TriviaQuestions();
	TriviaQuestions(const string&);

	virtual int getMax() { return 0; }	// TO BE DONE
	virtual int askQuestion();

protected:
	int points;
	string question;
	string answer;
};

//Fill In The Blank

class fillInBlank : public TriviaQuestions
{
private: string answer;
public:
	fillInBlank();

	int getMax() { return 0; }	// TO BE DONE
	int askQuestion();
	fillInBlank(const string&);

};

//3-Part Multiple Choice
class multipleChoice3 : public TriviaQuestions
{
private:
	string answer;
	vector<string> options;
public:
	multipleChoice3();
	multipleChoice3(int, string) {}		// TO DE DONE
	int getMax() { return 0; } // TO BE DONE
	int askQuestion();
	multipleChoice3(const string&);;
};

//4-part multiple choice
class multipleChoice4 : public TriviaQuestions
{
private:
	string answer;
	vector<string> options;
public:
	multipleChoice4();

	int getMax() { return 0;}	// TO BE DONE
	int askQuestion();
	multipleChoice4(const string&);
};

//True or False

class trueOrFalse : public TriviaQuestions
{
private:
	string answer;
public:
	trueOrFalse();
	trueOrFalse(const string&);

	int getMax() { return 0; }	// TO BE DONE
	int askQuestion();
};

//numeric-type question

class numeric : public TriviaQuestions
{
private:
	string answer;
public:
	numeric();
	numeric(const string&);
	int getMax() { return 0; }	// TO BE DONE
	int askQuestion();
};

TriviaQuestions::TriviaQuestions()
{
	points = 1;
	question = "Unknown";
}
TriviaQuestions::TriviaQuestions(const string& statement)
{
	int colon = statement.find(':');
	points = statement[0] - '0';
	question = statement.substr(2, colon - 2);
		answer = statement.substr(colon + 2, statement.length() - colon - 2);

}

int TriviaQuestions::askQuestion()
{
	cout << question;
	string input;

	while (true)
	{
		getline(cin, input);
		if (input == answer)
			return points;
	}
	return 0;
}

//FILL IN THE BLANK
fillInBlank::fillInBlank()
{
	points = 1;
	question = "Unknown";
}

fillInBlank::fillInBlank(const string& statement)
{
	int colon = statement.find(':');
	points = statement[0] - '0';
	question = statement.substr(2, colon - 2);
	answer = statement.substr(colon + 2, statement.length() - colon - 2);

}

int fillInBlank::askQuestion()
{
	cout << question;
	string input;

	while (true)
	{
		getline(cin, input);
		if (input == answer)
			return points;
	}
	return 0;
}
//3-PART MULTIPLE CHOICE

multipleChoice3::multipleChoice3()
{
	points = 1;
	question = "Unknown";
}

multipleChoice3::multipleChoice3(const string& statement)
{
	int answerStart = statement.find(':');
	int answerEnd = statement.find(':', answerStart - 2);

	points = statement[0] - '0';
	question = statement.substr(2, answerStart - 2);
	options = vector<string>(3);

	for (int i = 0; i < 3; ++i)
	{
		if (answerEnd == string::npos)
		{
			options[i] = statement.substr(answerStart + 2, statement.length() - answerStart - 1);
			options[i].erase(remove(options[i].begin(), options[i].end(), '\n'), options[i].end());
		}

		else
		{
			options[i] = statement.substr(answerStart + 2, answerEnd - answerStart - 3);
			options[i].erase(std::remove(options[i].begin(), options[i].end(), '\n'), options[i].end());
		}
		answerStart = answerEnd;
		answerEnd = statement.find(':', answerStart + 1);

	}
	answer = options[0];
}

int multipleChoice3::askQuestion()
{
	cout << "This is a 3-part Multiple Choice question worth" << points << "points" << endl;
	cout << question << endl;

	//random_shuffle(options.begin(), options.end()); //Shuffles the answers
	shuffle(options.begin(), options.end(), default_random_engine(seed));

	//PRints out the different options
	cout << "A: " << options[0] << endl;
	cout << "B: " << options[1] << endl;
	cout << "C: " << options[2] << endl;

	string input; //User answer

	while (true)
	{
		getline(cin, input);
		if (input == answer)
			return points;
		else
			break;
	}
	return 0;
}

//4-PART MULTIPLE CHOICE

multipleChoice4::multipleChoice4()
{
	points = 1;
	question = "Unknown";
}

multipleChoice4::multipleChoice4(const string& statement)
{
	int answerStart = statement.find(':');
	int answerEnd = statement.find(':', answerStart - 2);

	points = statement[0] - '0';
	question = statement.substr(2, answerStart - 2);
	options = vector<string>(4);

	for (int i = 0; i < 4; ++i)
	{
		if (answerEnd == string::npos)
		{
			options[i] = statement.substr(answerStart + 2, statement.length() - answerStart - 1);
			options[i].erase(remove(options[i].begin(), options[i].end(), '\n'), options[i].end());
		}

		else
		{
			options[i] = statement.substr(answerStart + 2, answerEnd - answerStart - 3);
			options[i].erase(std::remove(options[i].begin(), options[i].end(), '\n'), options[i].end());
		}
		answerStart = answerEnd;
		answerEnd = statement.find(':', answerStart + 1);

	}
	answer = options[0];
}

int multipleChoice4::askQuestion()
{
	cout << "This is a 4-Part multiple choice question worth " << points << " points" << endl;
	cout << question;

	//random_shuffle(options.begin(), options.end());
	shuffle(options.begin(), options.end(), default_random_engine(seed));

	cout << "A: " << options[0] << endl;
	cout << "B: " << options[1] << endl;
	cout << "C: " << options[2] << endl;
	cout << "D: " << options[3] << endl;

	string input;
	while (true)
	{
		getline(cin, input);
		if (input == answer)
			return points;
		else
			break;
	}
	return 0;
}

//TRUE OR FALSE

numeric::numeric()
{
	points = 1;
	question = "Unknwon";
}
//TRUE OR FALSE

numeric::numeric(const string& statement)
{
	int answerStart = statement.find(':');
	points = statement[0] - '0'; //Finds points on the line
	question = statement.substr(2, answerStart - 2);
	answer = statement.substr(answerStart + 2, statement.length() - answerStart - 2);
	answer.erase(remove(answer.begin(), answer.end(), '\n'), answer.end());
}

int numeric::askQuestion()
{
	cout << "This is a numeric question worth " << points << " points";
	cout << endl << question << endl;
	string input;
	while (true)
	{
		if (input == answer)
			return points;
		else
			break;
	}
}

//NUMERIC QUeSTIONS

trueOrFalse::trueOrFalse()
{
	points = 1;
	question = "unknwon";
}

trueOrFalse::trueOrFalse(const string& statement)
{
	int answerStart = statement.find(':');
	points = statement[0] - '0';
	question = statement.substr(2, answerStart - 2);
	answer = statement.substr(answerStart + 2, statement.length() - answerStart - 2);
	answer.erase(remove(answer.begin(), answer.end(), '\n'), answer.end());
}

int trueOrFalse::askQuestion()
{
	cout << "This is a True Or False question worth " << points << " points" << endl;
	cout << "A. True" << endl;
	cout << "B. False" << endl;

	string input;
	while (true)
	{
		if (input == answer)
			return points;
		else
			break;
	}

}

int main()
{
	ifstream triviaFile;
	string file, line;
	vector <TriviaQuestions*> questions;

	triviaFile.open("Questions.txt");
	cout << "File Opened";

	while (getline(triviaFile, line))
	{
		if (true)
		{
			string ln = string(0);
			string statement = ln.substr(4, ln.length() - 4);

			if (ln.substr(0, 3) == "FIB")
				questions.push_back(new fillInBlank(statement));
		}
	}
}