writting data from structure in different function

[Shadow]

data.cpp: In function `int WriteDatabase()':
data.cpp:58: `PersonInfo' undeclared (first use this function)
data.cpp:58: (Each undeclared identifier is reported only once
data.cpp:58: for each function it appears in.)

Those are the errors I am getting from this:

#include <iostream>
#include <string>
#include <fstream>
using namespace std;

int FillDatabase ( void );
int WriteDatabase ( );

struct Database
{
	string FirstName, LastName;
	int Age;
	string Marital;
	string Occupation;
};

int main ( void )
{  
	FillDatabase();
	WriteDatabase();
  	return 0;
}

int FillDatabase ( void )
{
	Database Person; 
	Database * PersonInfo;
	PersonInfo = &Person;

	cout<< "Name: ";
	cin>> Person.FirstName >> Person.LastName;

	cout<< "Age: ";
	cin>> Person.Age;

	cout<< "Marital Status: ";
	cin>> Person.Marital;

	cout<< "Occupation: ";
	cin>> Person.Occupation;

	return 0;
}

int WriteDatabase ( )
{
	fstream Log;
	Log.open("Data.txt", ios::app);
	
	if (Log == NULL)
	{
		cout <<"Open Error" <<endl;
		return 1;
	}

	Log <<"Name:" <<endl
	    <<PersonInfo->FirstName <<" " <<PersonInfo->LastName <<endl
	    <<"Age:" <<endl
	    <<PersonInfo->Age <<endl
	    <<"Marital Status:" <<endl
	    <<PersonInfo->Marital <<endl
	    <<"Occupation:" <<endl
	    <<PersonInfo->Occupation <<endl  <<endl;
	
	Log.close();
	return 0;
}

What am I missing?
I am trying to modularize this thing as much as possible, and while it's still in the stage of taking shape, I can't seem to figure out how to write the data from the structure in it's own function.