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#include <iostream>
#include <cstdlib>
#include <string>
#include <fstream>
#include <cctype>
#include <conio.h>
using namespace std;
//declare variables
void Add();
void Edit();
void Display();
void Delete();
void Sell();
void Value();
void printRecords();
struct Inventory
{
char title[35], artist[25], type[12];
int year;
int price;
int choice;
bool dead_flag;
};
int main()
{
int choice;
do
{
cout << "MENU" << endl;
cout << "1. Add Record(s): " << endl;
cout << "2. Display Records: " << endl;
cout << "3. Edit Records: " << endl;
cout << "4. Delete Records: " << endl;
cout << "5. Sell a Title: " << endl;
cout << "6. Sold Value: " << endl;
cout << "Please enter your selection.\n> ";
cin >> choice;
switch (choice)// change into an if else statement then turn into a function
{
case 1:
Add();//Add record
break;
case 2:
Display();//Display record
break;
case 3:
Edit();//Edit record
break;
case 4:
Delete();//Delete record
break;
case 5:
Sell(); //Sell record
break;
case 6:
// Value(); //value of sold records
break;
default:
cout << "Invalid Selection" << endl;
}
}
while(choice >= 7);
system("PAUSE");
return 0;
}
//Add function
void Add()
{
system("CLS"); //clears screen
fstream fout;
Inventory inv;
char ch;
fout.open("output.bin", ios::out | ios::binary | ios::app);
do
{
cout << "Enter title: ";
cin >> inv.title;
cout << "Enter artist: ";
cin >> inv.artist;
cout << "Enter type: ";
cin >> inv.type;
cout << "Enter price: ";
cin >> inv.price;
cout << "Enter year: ";
cin >> inv.year;
cout << endl;
//write record to file
fout.write(reinterpret_cast<char*>(&inv), sizeof(inv));
cout << "Do you want to add another record? " << endl;
cin >> ch;
}
while(tolower(ch) == 'y');
//close the file
fout.close();
}
//"Display" function
void Display()
{
system("CLS"); //clears screen
Inventory inv;
fstream fout;
fout.open("output.bin", ios::in | ios::binary);
fout.read(reinterpret_cast <char*> (&inv), sizeof(inv));
while (!fout.eof())
{
cout << "\nTitle\t: " << inv.title;
cout << "\nArtist\t: " << inv.artist;
cout << "\nType\t: " << inv.type;
cout << "\nYear\t: " << inv.year;
cout << "\nPrice\t: " << inv.price;
cout << endl;
fout.read(reinterpret_cast <char*> (&inv), sizeof(inv));
}
//close the file
fout.close();
}
void Edit()
{
int x;
Inventory inv;
fstream fout;
fout.open("output.bin", ios::in|ios::binary);
fout.seekg(0, ios::end);
int count = fout.tellg()/sizeof(inv);
cout << "\n There are "<< count <<" record in the file";
cout << "\n Enter Record Number to edit: ";
cin >> x;
fout.seekg((x-1)*sizeof(inv));
fout.read(reinterpret_cast<char*>(&inv), sizeof(inv));
cout << "Record " << x << " has following data: " << endl;
Display();
fout.close();
fout.open("output.bin", ios::out|ios::in|ios::binary);
fout.seekp((x-1)*sizeof(inv));
cout << "\nEnter data to Modify: " << endl;
fout.write(reinterpret_cast <char*> (&inv), sizeof(inv));
}
void Delete()
{
Inventory inv;
fstream fout;
int x;//to hold the record number the user wishes to delete
fout.open("output.bin", ios::in|ios::out|ios::binary);
fout.seekg(0, ios::end);
int count = fout.tellg()/sizeof(inv);
cout << "\n There are "<< count <<" record in the file";
cout << "\n Enter Record Number to delete: ";
cin >> x;
fout.seekg((x-1)*sizeof(inv));
fout.read(reinterpret_cast<char*>(&inv),sizeof(inv)); //read record from file
inv.dead_flag = true; //Here
fout.seekp(fout.tellg() - std::fstream::pos_type(sizeof(Inventory)));; //Move back one Inventory's worth in bytes
fout.write(reinterpret_cast<char*>(&inv), sizeof(inv)); //Now write it back to the file
fout.close();
}
void Sell()
{
Inventory inv;
fstream fout;
int x;//to hold the record number the user wishes to sell
fout.open("output.bin", ios::in|ios::out|ios::binary);
fout.seekg(0, ios::end);
int count = fout.tellg()/sizeof(inv);
cout << "\n There are "<< count <<" record in the file";
cout << "\n Enter Record Number to sell: ";
cin >> x;
x--;
}
void Value()
{
Inventory inv;
fstream fout;
int x; //to display the value of sold records
fout.open("output.bin", ios::in|ios::out|ios::binary);
fout.seekg(0, ios::end);
int count = fout.tellg()/sizeof(inv);
cout << "\n There are "<< count <<" record in the file";
cout << "\The total value of records are: ";
}
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