library program in c++ ?

I can't do it.Cods are here.
program has read data on files ( avaiable,book,borrow) and delete book,add book,control of books.

http://www.hotfile.com/dl/133283575/41f0c92/week4.rar.html (visual 2010 documents)

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#include "stdafx.h"
#include<iostream>
#include<vector>
#include<string>
#include<fstream>
using namespace std;
class student
{
private :
	string name;
	string department;
	string id;
	int year;

public:

	student(){}
	student(string n,string ID,string dep,int y)
	{
		name=n;
		department=dep;
		id=ID;
		year=y;
	}
void setAll(string n,string ID,string dep,int y)
{
		name=n;
		department=dep;
		id=ID;
		year=y;
}

void print()
{
	cout<<"Name        : "<<name<<endl;
	cout<<"Department  : "<<department<<endl;
	cout<<"ID          : "<<id<<endl;
	cout<<"Birth Year  : "<<year<<endl;
}
};
class book
{
private :
	string name;
	string id;
	string author;
	string available;

public:

	book(){}
	book(string n,string ID,string a,string av)
	{
		name=n;
		id=ID;
		author=a;
		available=av;
	}
void setAll(string n,string ID,string a,string av)
{
		name=n;
		id=ID;
		author=a;
		available=av;
}

void print()
{
	cout<<"Name        : "<<name<<endl;
	cout<<"Department  : "<<author<<endl;
	cout<<"ID          : "<<id<<endl;
	cout<<"Birth Year  : "<<available<<endl;
}
};
class borrow
{
private :
	string id;
	string bookID;
public:

	borrow(){}
	borrow(string ID,string bid)
	{
		id=ID;
		bookID=bid;
	}
void setAll(string ID,string bid)
{
		id=ID;
		bookID=bid;
}

};
void loadBook(vector<book> &b)
{
	ifstream myFile;
	string temp,name,id,a,av;
	int pos,pos2,pos3;
	int x=0;
	myFile.open("book.txt");
	while(!myFile.eof())
	{
		getline(myFile,temp);
		pos=temp.find(':');
		name=temp.substr(0,pos);
		pos2=temp.find(':',pos+1);
		id=temp.substr(pos+1,pos2-pos-1);
		pos3=temp.find(':',pos2+1);
		a=temp.substr(pos2+1,pos3-pos2-1);
		av=temp.substr(pos3+1,temp.size()-pos3);
		b[x].setAll(name,id,a,av);
		x++;
	}
}
void loadBorrow(vector<borrow>&bor)
{
	ifstream myFile;
	string temp,id,bid;
	int pos,pos2;
	int x=0;
	myFile.open("borrow.txt");
	while(!myFile.eof())
	{
		getline(myFile,temp);
		pos=temp.find(':');
		 id=temp.substr(0,pos);
		pos2=temp.find(':',pos+1);
		 bid=temp.substr(pos+1,temp.size()-pos);
		bor[x].setAll(id,bid);
		x++;
	}

}
void loadStu(vector<student>&stu)
{
	ifstream myFile;
	string temp,name,id,dep,y;
	int year,pos,pos2,pos3;
	int x=0;
	myFile.open("student.txt");
	while(!myFile.eof())
	{
		getline(myFile,temp);
		pos=temp.find(':');
		name=temp.substr(0,pos);
		pos2=temp.find(':',pos+1);
		id=temp.substr(pos+1,pos2-pos-1);
		pos3=temp.find(':',pos2+1);
		dep=temp.substr(pos2+1,pos3-pos2-1);
		y=temp.substr(pos3+1,temp.size()-pos3);
		year=atoi(y.c_str());
		stu[x].setAll(name,id,dep,year);
		x++;
	}
	for(int i=0;i<x;i++)
		stu[i].print();
}
int _tmain(int argc, _TCHAR* argv[])
{
	int x=5;
	int r,pos,year,i;
	string name,id,dep,y,sil;
	vector<student> stu;
	vector<book>b;
	vector<borrow>bor;
	stu.resize(10);
	b.resize(10);
	bor.resize(10);
	size_t found;
	cout<<"Ne yapmak istersiniz?"
		<<"\nekleme için 1"
		<<"\nsilmek icin 2"
		<<endl;
	cin>>r;
	while(!(r==1 || r==2 || r==3))
	{
		cout<<"Ne yapmak istersiniz?"
		<<"\nEkleme yapmak icin 1'i"
		<<"\nsilmek icin 2'yi"
		<<endl;
	cin>>r;
	}
	if(r==1)
	{
		cout<<"Lütfen ismi giriniz"<<endl;
		cin>>name;
		cout<<"Lütfen bolumu giriniz"<<endl;
		cin>>dep;
		cout<<"Lütfen numarayi giriniz"<<endl;
		cin>>id;
		cout<<"Lütfen yili giriniz"<<endl;
		cin>>y;
		year=atoi(y.c_str());
		x=x+1;
		stu[x].setAll(name,id,dep,year);
		freopen ("student.txt","a+",stdout);
		cout<<stu[x];
		fclose (stdout);
	}
	else 
	{
		cout<<"Lütfen numarayi giriniz"<<endl;
		cin>>sil;
		for(i=0;i<x;i++)
		{
		if(sil==stu[i].id)
			stu[i].setAll("Bu kayit silinmistir");
		}
	}
	
	loadStu(stu);
	loadBook(b);
	loadBorrow(bor);
	for(int i=0;i<x;i++)
	{
		stu[i].print();
		//b[i].print();
		//bor[i].print();
	}
	system("PAUSE");
	return 0;
}
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