How to pass fstream to a function multiple times - c++

Question

I am struggling with a programming assignment in my C++ class. The assignment involves creating a random access file to store inventory for a hardware store. I can create, read and write to the file just fine. I have a function which opens the file or creates a new one if it does not exist. This function then returns the open file as std::fstream. I am trying to pass that open file to another function which prints out the contents of the file to the console. When I call the print function the first time it works just fine. However, when I return to the main menu and try and call the print function again, it prints out nothing from the file.
#include <iostream>
#include <fstream>
#include <iomanip>
#include <cstdlib>
#include "HardwareData.h"
void printMenu();
unsigned short int getMenuChoice();
std::string getFileName();
std::fstream openFile(const std::string& fileName);
std::fstream newFile(const std::string& filename);
void printHeader();
void printAllRecords(std::fstream& file);
void newRecord(std::fstream& file);
unsigned int getRecordNum(const std::string& prompt);
bool recordIsBlank(std::fstream& file, unsigned int recordNum);
int main() {
unsigned short int menuChoice{0};
std::string filename;
std::fstream file;
while(menuChoice != 6){
printMenu();
menuChoice = getMenuChoice();
switch(menuChoice){
case 1:
filename = getFileName();
file = openFile(filename);
break;
case 2:
printAllRecords(file);
break;
case 3:
newRecord(file);
break;
case 4:
break;
case 5:
break;
default:
break;
}
}
return(0);
}
std::string getFileName(){
std::string filename;
std::cout << "Enter a filename:";
std::cin >> filename;
return filename;
}
std::fstream openFile(const std::string& filename){
std::fstream file{filename, std::ios::in | std::ios::out | std::ios::binary};
if(!file){
std::cout << "File could not be opened." << std::endl;
std::cout << "Creating new file." << std::endl;
file = newFile(filename);
std::cout << "Successfully created " << filename << std::endl;
}
else{
std::cout << filename << " opened successfully" << std::endl;
}
return file;
}
std::fstream newFile(const std::string& filename){
std::ofstream file{filename, std::ios::out | std::ios::binary};
if(!file){
std::cerr << "File could not be created." << std::endl;
exit(EXIT_FAILURE);
}
HardwareData emptyRecord;
for(int i=0; i<100; i++){
file.write(reinterpret_cast<const char*>(&emptyRecord), sizeof(HardwareData));
}
file.close();
return openFile(filename);
}
void printHeader(){
std::cout << "Record# Tool Name Quantity Cost \n";
std::cout << "==================================================\n";
}
void printAllRecords(std::fstream& file){
file.seekg(0);
HardwareData record;
file.read(reinterpret_cast<char*>(&record), sizeof(HardwareData));
printHeader();
while(!file.eof()){
if(record.getRecordNum() != 0){
record.printRecord();
}
file.read(reinterpret_cast<char*>(&record), sizeof(HardwareData));
}
}
I was expecting to pass the file by reference and still be able to use that reference again on another function call. I am not getting any errors