FILE HANDLING error.

I am creating a store updater, and the customer would be the user. The customer is supposed to buy, see full lists of fruits, search an item and can exit anytime. I don't why my code doesn't run, but here's the errors and warnings i received.

ERRORS:
identifier "fin" is undefined
identifier "fin" is undefined
WARNINGS:
warning C4996: 'fopen': This function or variable may be unsafe. Consider using fopen_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

warning C4996: 'fopen': This function or variable may be unsafe. Consider using fopen_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

warning C4996: 'fscanf': This function or variable may be unsafe. Consider using fscanf_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

warning C4996: 'fscanf': This function or variable may be unsafe. Consider using fscanf_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

// CStudy_3.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <iostream>
#include <fstream>
#include <Windows.h>
#include <conio.h>
#include <string>
#include <vector>
#include <iomanip>
using namespace std;
struct Customer
{
	int id;
	char name[20];
	int quantity;
	float price;
	int deleted;
};

void trim();
void loading(void);
void gotoxy (int x, int y);

int main()
{
	Customer cust[1];
	FILE *fp;
	int numChoice;
	char choice;
	int choice_menu=0;

	system ("color 3");
	/*loading();*/
	system("cls");

	//welcoming graphics

	fp=fopen("D:\\items.txt", "r");
		if (!fp)
		{
			cout << "Cannot open file.\n";
			cout << "Please replace the 'items.txt' file in your Local Disk C:\\.\n";
			cout << "Thank you and enter to try again.";
			system("pause>0");
			goto menu;
		}

menu:
	system("cls");
	gotoxy(28,8);
	cout<<"MENU: \n";
	gotoxy(28,9);
	cout<<"1- BUY ITEM/s";
	gotoxy(28,10);
	cout<<"2- SEE LIST OF FRUITS";
	gotoxy(28,11);
	cout<<"3- SEARCH RECORD/s";
	gotoxy(28,12);
	cout<<"4- EXIT";
	gotoxy(28,13);
	cout<<"CHOICE: ";
	gotoxy(36,13);
	cin>>choice_menu;

	switch(choice_menu)
	{
	case 1:
		system("cls");
		cout << "How many item/s do you want to buy?: ";
		cin >> numChoice;
		void trim();

		for (int i=0; i<numChoice; i++)
		{
			char itmDel;
			cout << "ITEM "<<(i+1)<<endl;
			cout << "What item do you want to buy? Enter the item's id no: ";
			cin >> itmDel;
			/*cust[itmDel].deleted=0;*/
			cout << "How many of "<<cust[i].name<<" do you want to buy?";
			cin >> cust[i].quantity;
			void trim();
		}
		cout << "Please wait..";
		cout << "Gathering all your needed item/s";
		
		
		/*fp=fopen("D:\\items.txt", "r");
		if (!fp)
		{
			cout << "Cannot open file.\n";
			cout << "Please replace the 'items.txt' file in your Local Disk C:\\.\n";
			cout << "Thank you and enter to try again.";
			system("pause>0");
			goto menu;
		}*/

		for (int i=0; i<numChoice; i++)
		{
			fscanf(fp, "%d%s%d%f", &cust[i].id, &cust[i].name, &cust[i].quantity, &cust[i].price);
			cout << "ITEM "<<(i+1)<<endl<<endl;
			cout << "ID: "<< cust[i].id<<endl;
			cout << "NAME: "<< cust[i].name<<endl;
			cout << "QUANTITY: "<<cust[i].quantity<<endl;
			cout << "PRICE: "<<cust[i].price<<endl;
					cust[i].deleted=0;

			cout << endl;
			cout << "Is this the item do you want to buy? (Y/N): ";
			cin >> choice;

			if (choice=='Y' || choice=='y')
			{
				system ("cls");
				fscanf(fp, "%d%s%d%f", &cust[i].id, &cust[i].name, &cust[i].quantity, &cust[i].price);
				cout << "ITEM "<<(i+1)<<endl<<endl;
				cout << "ID: "<< cust[i].id<<endl;
				cout << "NAME: "<< cust[i].name<<endl;
				cout << "QUANTITY: "<<cust[i].quantity<<endl;
				cout << "PRICE: "<<cust[i].price<<endl;
					cust[i].deleted=1;
				cout << "Buying the item/s..";
				cout << "Please wait..";
				fin.close();
				goto buy;
			}

			else if (choice=='N' || choice=='n')
			{
				system("cls");
				cout << "Okay, going back to the menu..";
				cout << "Please type what you want to buy clearly.";
				fin.close();
				Sleep(1280);
				goto menu;
			}
		}
			break;
	case 2:
		system ("cls");
		char buff[1000];
		cout<<setw(4)<<"ID"
			<<setw(15)<<"NAME"
			<<setw(14)<<"QUANTITY"
			<<setw(15)<<"PRICE";

		for (int i=0; i<44; i++)
		{
			while (fgets(buff,1000,fp)!=NULL)
				cout<<buff;
			cout<<endl;
			cout<<setw(4)<<i
				<<setw(15)<<cust[i].name
				<<setw(14)<<cust[i].quantity
				<<setw(15)<<cust[i].price;
		}
		break;

	case 3: system("cls");
		int itmSrch;
		char choice_srch;
again:
		fp=fopen("D:\\items.txt", "w");
		cout<<"What item do you want to search? :";
		cin>>itmSrch;

		system ("cls");
		cout<<setw(4)<<"ID"
			<<setw(15)<<"NAME"
			<<setw(14)<<"QUANTITY"
			<<setw(15)<<"PRICE";

		cout<<"Is this the item? ";
		cout<<cust[itmSrch].name;
		cout<<"\nAnswer: ";
		cin>>choice_srch;

		if (choice_srch =='y' || choice_srch=='Y')
		{
			cout<<endl;
			cout<<setw(4)<<itmSrch
				<<setw(15)<<cust[itmSrch].name
				<<setw(14)<<cust[itmSrch].quantity
				<<setw(15)<<cust[itmSrch].price;
		}
		else 
		{
			system("cls");
			goto again;
		}
		system("pause>0");
		goto menu;
		break;
	case 4: system("cls");
		gotoxy(17, 10);
		cout<<"THANK YOU FOR BUYING FRUITS, PLEASE BUY AGAIN!";
		system ("pause>0");
		return 0;
		break;

	default: system("cls");
		gotoxy (15, 10);
		cout<<"INVALID INPUT! PLEASE, ENTER 1-4 ONLY. THANK YOU.";
		Sleep(1400);
		goto menu;
		break;


	}

buy:

	system("cls");
	cout<<"\n\n\n\n\n\nBuying the item, please wait..";
	cout<<"\n\n\n\n\n\n\n";
	for (int i=0; i<80; i++)
	{
		cout<<(char)221;
		for (long j=0; j<16000000; j++)
		{}
	}
	cout << "Done purchasing! Want to buy more or exit the store? (B/E)";
	cin >> choice;

	if (choice=='e' || choice=='E')
	{
		system("cls");
		exit(1);
	}

	else if (choice=='B' || choice=='b')
	{
		system("cls");
		goto menu;
	}

	fclose(fp);
	return 0;
}

void trim()
{
	char s;
	do{
		cin.get(s);
	}while (s!='\n');
}

void loading(void)
{
	gotoxy(32, 10);
	cout<<"L O A D I N G \n";
	for (int i=0; i<80; i++)
	{
		cout<<(char)221;
		for (long j=0; j<16000000; j++)
		{}
	}
	cout<<endl;
}

void gotoxy (int x, int y)
{

  COORD coord;

  coord.X = x; coord.Y = y;

  SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), coord);
}

Pinpoint whats wrong and please, guide me through. T H A N K S ! ! :)

KamKan (20)

DO NOT IGNOREEEEE! nothing's helpful really >:/ thanks.

MikeyBoy (5631)

Your error messages explain themselves. At lines 126 and 135, you're trying to use something called fin. But nowhere in your code do you define what fin is.

It looks as though it's supposed to be a file streaming object, and you're trying to close a file, but that makes no sense, because everywhere else in your file, you're using C-style FILE pointers and functions that operate on them.

Topic archived. No new replies allowed.

C++

Forum

FILE HANDLING error.