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C++ w/Operator Overloading & Inheritance Failing to Execute

ipcmd0 (2)
Hello, I've been banging my head on this for a while now. I have two classes, RationalNumber and Term. The RationalNumber class allows for the creation of an object of "numerator/denominator". I created the Term class to utilize the RationalNumber class and add an exponent value. The final object should look like "n/dx^2". I just got my code to compile, but when I run it through the it fails without any errors. The only thing that I found was that it breaks at the first function in Term.cpp. Thank you in advance!

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#include <iostream>
using namespace std;

class RationalNumber {
public:
	//initializing Constructors/functions
	RationalNumber();
	RationalNumber(int, int);
	void initRational();
	void setNumerator(int);
	int getNumerator();
	void setDenominator(int);
	int getDenominator();
	int getGCD();
	void simplifyRational(int);
	void print();
	
	//Overloaded operators
	RationalNumber operator+(RationalNumber) const; 
	RationalNumber operator-(RationalNumber) const;
	RationalNumber operator*(RationalNumber) const;
	RationalNumber operator/(RationalNumber) const;
	friend ostream &operator << (ostream &output, const RationalNumber &fraction) {
		output << fraction.numerator << "/" << fraction.denominator;
		return output;
	};
	
private:
	//declaring private variables
	int numerator;
	int denominator;	
};


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#include "RationalNumber.h"
#include <iostream>
using namespace std;

//Empty Constructor
RationalNumber::RationalNumber() {
	
};

//Rational Constructor
RationalNumber::RationalNumber(int num, int den) {
	if (num != 0)
		if (den !=0)
			numerator = num;
	denominator = den;
}

void RationalNumber::initRational() {
	char slash;
	cout << "\nPlease enter a rational number in the form of a/b: ";
	cin >> numerator >> slash >> denominator;
	if (denominator == 0) {
		cout << "\nCannot divide by 0, please enter another denominator: ";
		cin >> denominator;
	}
}

//sets the numerator for the rational
void RationalNumber::setNumerator(int num) {
	numerator = num;
}

//obtains the value of the numerator
int RationalNumber::getNumerator() {
	return numerator;
}

//sets the denominator for the rational
void RationalNumber::setDenominator(int den) {
	denominator = den;
}

//obtains the value of the denominator
int RationalNumber::getDenominator() {
	return denominator;
}

//Obtains the greatest commin divisor
int RationalNumber::getGCD() {
	int temp;
	int num = numerator;
	int den = denominator;
	while (den != 0) {
		temp = den;
		den = num % den;
		num = temp;
	}
	return num;
}

void RationalNumber::simplifyRational(int gcd) {
	numerator = numerator / gcd;
	denominator = denominator / gcd;
}

//Display Rational number
void RationalNumber::print() {
	cout << numerator << "/" << denominator << endl;
}

RationalNumber RationalNumber::operator+(RationalNumber rationalptr) const {
	RationalNumber ptr;
	ptr.numerator = numerator * rationalptr.denominator + denominator * rationalptr.numerator;
	ptr.denominator = denominator * rationalptr.denominator;
	return(ptr);
}

RationalNumber RationalNumber::operator-(RationalNumber rationalptr) const {
	RationalNumber ptr;
	ptr.numerator = numerator * rationalptr.denominator - denominator * rationalptr.numerator;
	ptr.denominator = denominator * rationalptr.denominator;
	return(ptr);
}

RationalNumber RationalNumber::operator*(RationalNumber rationalptr) const {
	RationalNumber ptr; 
	ptr.numerator = numerator * rationalptr.numerator;
	ptr.denominator = denominator * rationalptr.denominator;
	return(ptr);
}

RationalNumber RationalNumber::operator/(RationalNumber rationalptr) const {
	RationalNumber ptr;
	ptr.numerator = numerator * rationalptr.denominator;
	ptr.denominator = denominator * rationalptr.numerator;
	return(ptr);
}

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#include "RationalNumber.h"
#include <iostream>
#include <vector>
using namespace std;

class Term : public RationalNumber  {
public:
	Term();
	void initExponent();
	void setExponent(int);
	int getExponent();
	void prepTerm();
	void displayTerm();
	virtual void print();	
	
private:
	int exponent;
	vector<RationalNumber> rational_vector;	
};

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#include "Term.h"
#include <iostream>
using namespace std;

Term::Term() {
	rational_vector.reserve(3);
}
void Term::initExponent() {
	cout << "Enter the exponent: ";
	cin >> exponent;
}

void Term::setExponent(int exp) {
	exponent = exp;
}
int Term::getExponent() {
	return exponent;
}

void Term::prepTerm() {
	RationalNumber rational;
	rational.initRational();
	rational_vector.push_back(rational);

	cout << "Enter the exponent: ";
	cin >> exponent;
}

void Term::print() {
	cout << "x^" << getExponent();
}

void Term::displayTerm() {
	vector<RationalNumber>::iterator it;
	
	for (it=rational_vector.begin(); it!=rational_vector.end(); ++it) {
		 cout << ((RationalNumber)*it) << endl;
	}
}
ipcmd0 (2)
The program seems to fail when I try and create a default Term object.
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