#include <iostream>

using namespace std;

struct Record
{
	string firstname;
	string lastname;
	int age;
};

void changeRecords(Record * rec, int size);

int main()
{
	Record * record = new Record[2];

	record[0].firstname = "John";
	record[0].lastname = "Doe";
	record[1].firstname = "Jane";
	record[1].lastname = "Doe";

	changeRecords(Record * record, int 2);

	return 0;
}

void changeRecords(Record * rec, int size)
{
	rec[0].firstname = "Chupacabra";
}