Couple of odd errors

[brieflySlappy]

I've been trying to put together some basic stuff in C++, but gotten stuck here.

Here's my main:

int main() {
	PersonReg *reg= new PersonReg(10);
	RegInput input;
	std::string fileName = "Hoi";
	input.ReadReg(*reg, fileName);
	reg->print();
	
	return 0;
}

Here's PersonReg:

#include <string>
#include <iostream>
#include "PersonReg.h"

PersonReg::PersonReg(int maxSize) {
	this->maxSize = maxSize;
	personer = new Person[maxSize];
	personer[0].setPerson("John", "Trelleborg");
	personer[1].setPerson("Bob", "Helsinki");
}

void PersonReg::addPerson(Person *newPerson) {
	int index = 0;

	while (index < maxSize) {
		if (personer[index].getName() == "") {
			personer[index] = *newPerson;
			return;
		}

		index++;
	}

	std::cout << "Registry full!" << std::endl;
}

void PersonReg::removePerson(Person *removePerson) {
	int index = 0;

	while (index < maxSize) {
		if (personer[index].getName() == removePerson->getName()
			&& personer[index].getAdress() == removePerson->getAdress()) {
			personer[index].clear();
			return;
		}

		index++;
	}
}

Person* PersonReg::findPerson(char* query) {
	size_t index = 0, index2 = 0;

	while (index < maxSize) {
		while (index2 < strlen(query) && query[index2] == personer[index].getName().at(index2))
		{
			if (query[index2+1] == '\0') {
				return &personer[index];
			}

			index2++;
		}

		index++;
	}

	return NULL;
}

void PersonReg::print() {
	int index = 0;
		
	while (index < maxSize) {
		if (personer[index].getName() != "") {
			personer[index].print();
		}
		index++;
	}
}

PersonReg::~PersonReg() {
delete personer;
}

.h

#ifndef PERSONREG_H
#define PERSONREG_H
#include "Person.h"
#include "RegInput.h"

class PersonReg {
public:
	Person *personer;
	int maxSize;
	PersonReg(int maxSize);
	void addPerson(Person *newPerson);
		void removePerson(Person *removePerson);
		Person* findPerson(char* query);
		void print();
		~PersonReg();
};

#endif 

RegInput:

[#include <iostream>
#include <fstream>
#include <string>
#include "RegInput.h"
#include "PersonReg.h"

bool RegInput::ReadReg(PersonReg& reg, std::string fileName) {
	std::string line;
	std::ifstream myfile(fileName);

	if (myfile.is_open()) {
		while (std::getline(myfile, line)) {
			while (line.length() == 0 && getline(myfile, line));    
			std::string name(line);
			std::string adress;
			getline(myfile, adress);
			reg.addPerson(&Person(name, adress));
		}   myfile.close();

		return true;
	}

	else { 
		std::cout << "Unable to open file";
		return false; 
	}
}
]

RegInput.h

#ifndef REGINPUT_H
#define REGINPUT_H
#include "PersonReg.h"

class RegInput {
public:
	bool ReadReg(PersonReg& reg, std::string fileName);
};

#endif 

When compiled, I get "RegInput::ReadReg: function does not take 2 arguments" while it's executed with 2 arguments: bool ReadReg(PersonReg& reg, std::string fileName). The error points to the line 'input.ReadReg(*reg, fileName);' in the main method.

I also get 'syntax error: identifier 'PersonReg' on the line 'bool ReadReg(PersonReg& reg, std::string fileName);' in the RegInput header file even though "PersonReg.h" is included.

What am I doing wrong?