Reading An External Text File

[abeabukwaik]

Hi guys. I'm having a really hard time reading a text file. My teacher gave us an assignment and the code I wrote below should use the text file she gave us to read the input file (the name is input.txt) but when I run the code nothing comes up. It just says "C:\Users\Ibrahim Abukwaik\source\repos\Project 2\Debug\Project 2.exe (process 19264) exited with code 0.
Press any key to close this window . . ."


How do I make my code run? The program is successful so I didn't think there were any errors in the code but maybe I'm wrong...

#include<iostream>
#include<fstream>
#include<string>
#include<iomanip>

using namespace std;

ofstream fout;

double calCost(int quantity, double cost) {
	double totalCost;
	totalCost = quantity * cost;
	return totalCost;
}

double acctotal(double totalCost, double itemCost) {
	double newTotalCost;
	newTotalCost = totalCost + itemCost;
	return newTotalCost;
}

void writeLine(string itemno, int quantity, double unitCost, double totalCost) {
	fout << left << setw(15) << itemno << left << setw(15) << quantity << left << setw(15) << unitCost << left << setw(15) << totalCost << endl;
}

void printHeader(string date) {
	fout << "Invoice date:" << date << endl;
}
void printTotal(double invoiceTotal) {
	fout << "Total................................................" << invoiceTotal << endl;
}

int main() {
	fout.open("input.txt");
	ifstream fin;
	fin.open("input.txt");
	if (fin.is_open()) {
		while (!fin.eof())
		{
			int items;
			string date;
			double invoiceCost = 0;
			while (fin >> items >> date)
			{
				fout << endl;
				printHeader(date);
				fout << left << setw(15) << "Item" << left << setw(15) << "Quantity" << left << setw(15) << "Unit Price" << left << setw(15) << "Total Price" << endl;
				for (size_t i = 0; i < items; ++i)
				{
					string itemno;
					int quantity;
					double unitCost;
					fin >> itemno >> quantity >> unitCost;
					double totalCost;
					totalCost = calCost(quantity, unitCost);
					invoiceCost = acctotal(invoiceCost, totalCost);
					writeLine(itemno, quantity, unitCost, totalCost);
				}
				printTotal(invoiceCost);
			}
		}
	}
	else {
		cout << "Error in opening input file \n";
	}

	return 0;

}

[coder777]

Whether there are errors depends on what you want to achieve.

Note that fout and fin will use the same file "input.txt". I guess that you want "output.txt" for fout?

I suggest that you make some debug cout << ... just to see what happening while running the program.