Confusing Syntax Error - c++

Question

I am making a program that takes info from a file then puts it into a struct then makes an array of structs. I have the program done, but when I compile I get 2 errors. "Expected Declaration" and "Syntax Error: Constant" both pointing to the first line of the read in file. I am at a loss and I am not sure how to get it running. My code I am using looks like this:
#include "stdafx.h"
#include <iostream>
#include <fstream>
#include <string>
#include <iomanip>
#include <stdlib.h>
using namespace std;
struct book
{
int ISBN;
string Author;
string Title;
int Quantity;
double price;
};
void choice1(book books[], int& size, int MAX_SIZE)
{
ifstream inFile;
inFile.open("Inventory.txt");
string str;
while (inFile && size < MAX_SIZE)
{
getline(inFile, str);
books[size].ISBN = atoi(str.c_str());
getline(inFile, books[size].Author);
getline(inFile, books[size].Title);
getline(inFile, str);
books[size].Quantity = atoi(str.c_str());
getline(inFile, str);
books[size].price = atoi(str.c_str());
getline(inFile, str);
size++;
}
cout << "You have successfully read the file." << endl;
inFile.close();
}
void choice2(book books[], int size)
{
for (int i = 0; i < size; i++)
{
cout << endl;
cout << "Book Number: " << (i + 1) << endl;
cout << "ISBN: " << books[i].ISBN << endl;
cout << "Author: " << books[i].Author << endl;
cout << "Title: " << books[i].Title << endl;
cout << "Quantity: " << books[i].Quantity << endl;
cout << "Price: $" << books[i].price << endl;
}
if (size != 0)
cout << "You have successfully printed the array." << endl;
else
cout << "Array is empty. Read the file first." << endl;
}
void choice3(book books[], int size)
{
if (size == 0)
cout << "Array is empty. Read the data first." << endl;
else
{
int isbn;
int option;
int qty;
cout << "\nEnter the ISBN of the book: ";
cin >> isbn;
cout << "1. Increment" << endl;
cout << "2. Decrement" << endl;
cout << "3. Add New" << endl;
cout << "Enter your option: ";
cin >> option;
cout << "Enter the quantity: ";
cin >> qty;
for (int i = 0; i < size; i++)
{
if (books[i].ISBN == isbn)
{
if (option == 1)
books[i].Quantity += qty;
else if (option == 2)
{
books[i].Quantity -= qty;
if (books[i].Quantity)
books[i].Quantity = 0;
}
else if (option == 3)
books[i].Quantity = qty;
break;
}
}
cout << "You have successfully updated the array." << endl;
}
}
void choice4(book books[], int& size, int MAX_SIZE)
{
if (size < MAX_SIZE)
{
string str;
cout << "\nEnter the book ISBN: ";
cin >> books[size].ISBN;
cout << "Enter the author name: ";
cin >> books[size].Author;
cout << "Enter the book tile: ";
cin >> books[size].Title;
cin.get();
cout << "Enter the books quantity: ";
cin >> books[size].Quantity;
cout << "Enter the book price: $";
cin >> books[size].price;
size++;
cout << "You have successfully inserted an entry." << endl;
}
}
void choice5(book books[], int size)
{
for (int i = 1; i < size; i++)
{
book current = books[i];
int j = i;
while (j > 0 && (books[j - 1].Title).compare(current.Title) > 0)
{
books[j] = books[j - 1];
j--;
}
books[j] = current;
}
if (size != 0)
cout << "You have successfully sorted the array." << endl;
else
cout << "Array is empty. Read the data first." << endl;
}
void choice6(book books[], int& size)
{
if (size == 0)
cout << "Array is empty. Read the data first." << endl;
else
{
int isbn;
cout << "\nEnter the ISBN of the book: ";
cin >> isbn;
for (int i = 0; i < size; i++)
{
if (books[i].ISBN == isbn)
{
int j = i;
while (j < size - 1)
{
books[j] = books[j + 1];
j++;
}
size--;
break;
}
}
cout << "You have successfully deleted an entry." << endl;
}
}
void choice7(book books[], int size)
{
ofstream outFile;
outFile.open("finalData.dat");
for (int i = 0; i < size; i++)
{
outFile << "Book Number: " << (i + 1) << endl;
outFile << "ISBN: " << books[i].ISBN << endl;
outFile << "Author: " << books[i].Author << endl;
outFile << "Title: " << books[i].Title << endl;
outFile << "Quantity: " << books[i].Quantity << endl;
outFile << "Price: $" << books[i].price << endl << endl;
}
if (size != 0)
cout << "You have successfully printed the array." << endl;
else
cout << "Array is empty. Read the file first." << endl;
outFile.close();
}
// File: Boookstore.cpp
#include<iostream>
#include"Inventory.txt"
using namespace std;
int main()
{
const int MAX_SIZE = 100;
int size = 0;
int choice;
book books[MAX_SIZE];
do
{
cout << "1: Read inventory forn file" << endl;
cout << "2: Display Inventory" << endl;
cout << "3: Update an entry" << endl;
cout << "4: Add an entry" << endl;
cout << "5: Sort inventory" << endl;
cout << "6: Delete an entry" << endl;
cout << "7: Write inventory to file and exit" << endl;
cout << "Enter your choice: ";
cin >> choice;
switch (choice)
{
case 1:
choice1(books, size, MAX_SIZE);
break;
case 2:
choice2(books, size);
break;
case 3:
choice3(books, size);
break;
case 4:
choice4(books, size, MAX_SIZE);
break;
case 5:
choice5(books, size);
break;
case 6:
choice6(books, size);
break;
case 7:
choice7(books, size);
cout << "Thank you." << endl;
break;
default:
cout << "Invalid choice!" << endl;
}
cout << endl;
} while (choice != 7);
system("pause");
return 0;
}
I have the read in file in the same folder as my source file, but I am not sure what is causing the issue. My read in file is exactly this:
20451
My First Book
Mark Lusk
Pearson Publishing
40
45.34
9780316
Brown Family
Mason Victor
Little Brown
36
105.99
1349877
Story of My Life
Norah M Jones
CreateSpace Independent Publishing Platform
20
18
It is supposed to take the first line of the file and set it as an int to the ISNB section of my struct, but it just keeps telling me it is a constant. Any help is appreciated!

Answer 1

You can't #include a data file. It will treat it like part of your code - and it's obviously not valid c++.
#include "Inventory.txt"
You have to open the file and read it with things like ifstream.