// s2.cpp : Defines the entry point for the console application.
// Project Stage 2.cpp : Defines the entry point for the console application.
/* Algorithm
Menu()
Choose option
Create a new expense
Enter the initial amount of money in bank or to add money to bank from paycheck
Enter the new expense
Enter the expense category
Input whether expense is recurring or not*
Input whether expense is saved for or not
calculate balance after expense
display financial status*/



#include <iostream>
#include <cstring>
#include <cassert>
#include <fstream>

using std::strncpy;
using std::memset;


using namespace std;

	
struct node
{
	char *name;//dynamic array for name of expense
	char *cat;//category of expense
	float cost;//cost of expense
	void create();
	node* next;
	node();//node constructor
	
};



class expense
{
private:
	node *head;
	float balance;
	float cash;
public:
    expense();//constructor
	~expense();//destructor
	void create();//function to create expense
	void display();//display function for expenses
    void read();
	void write();
	void deposit();
	void add();//add expenses total 
	void status();
};
expense::expense()
{
	head = NULL;
}
expense::~expense()
{
	node* current=NULL;
	while(head)
	{
		current = head->next;
		if(head->name)
			delete [] head-> name;
		if(head->cat)
			delete [] head->cat;
		head->cost = 0.0;
		delete head;
		head = current;
	}
}
void expense::deposit()
{
	cout<<"You have chosen the option to deposit money into your revolving account."<<endl;
	cout<<" "<<endl;
	cout<<"Enter the amount you would like to deposit: $ ";
	cin>>cash;
	cout<<" "<<endl;
	cout<<"To see how much you have, and if you can afford purchase choose option financial status"<<endl;
}
void expense::add()//function that adds all expenses
{
	//code for adding my cost
	//return total
	//total variable for expense totals
}

void expense::status()		//function that tells you whether or not you can afford a purchase
{
	float price=0;
	cout<<"What is the price of your intended purchase: $ "<<endl;
	cin>>price;
	//if price greater than balance then can't afford new purchase
	//if price less than balance, then you can afford new purchase
}
	

void expense::display() //this function displays the expenses you have just created as well as those read in from external file
{
	node*current = head;
	while(current)
	{
		cout<<" "<<endl;
        cout<<current->name<<"	"<<current->cat<<"	$"<<current->cost<<'\n'; //display format same as the format of data file
		cout<<" "<<endl;
		current = current->next;
	}
}
	
void expense::read()
{
     static const size_t buf_size = 200;
	ifstream infile;
    infile.open("expense.txt");
    
    if (infile.fail()) {
       cout<<"Failed to open the file..." << endl;
       return;
    }
    
	char aray[buf_size];
	node*current = NULL;
	
	memset( aray, 0, buf_size );                    // Set array to zeroes.
	infile.getline(aray,buf_size,':');
	int temp=0;

	while(!infile.eof())
	{
		current = head;                             //Initialize values
		//head = NULL;
		//head = new node;
		//head->name = NULL;
        //head->next = NULL;
        //head->cat = NULL;
        //head->cost=0.0;
        infile.get();
//		head->next=current;
		head->name = new char[strlen(aray)+1];
		strncpy(head->name, aray, buf_size-1);      // string length
    	infile.getline(aray,buf_size,':'); 
        infile.get();                              // eat colon
		head->cat = new char[strlen(aray)+1];
		strncpy(head->cat, aray, (buf_size-1));
		infile.get();  infile.get(aray, (buf_size), ':'); //eat the colon
		//infile.get();
		infile >> head->cost;
        infile.get();//eat the '/n'		
		infile.getline(aray,buf_size,'\n');//get cost 
		cout<<aray<<endl;
		head->cost=temp;
		infile.get();
    	infile.getline(aray,buf_size,':');
    	assert(head);
		//cout << head->name << ':';
		//cout << head->cat << ':';
        //cout << head->cost << '\n';
		cout<<"hi"<<endl;
	}

	infile.close();

}

void expense::write()
{
    ofstream outfile;
	outfile.open("expense.txt");
	node *current = head;
	if(!outfile.is_open())
		cout<<"couldn't open the file"<<endl;
	while(current!=NULL)
	{
		outfile<<current->name<<":"<<current->cat<<":"<<current->cost<<'\n';
        cout<<current->name<<":"<<current->cat<<":"<<current->cost<<'\n';
		current=current->next;
	}
	outfile.close();
}
/*class expense_track::expense //access to class expense
{
      public:
          expenseTrack();       
          void displayallexpenes();
          void expensetotalshow();
          int *search (char cat[]);
          void deletexpense();
      private:
          int numexpenses;
};

expenseTrack::expenseTrack()
{
          numexpenses=0;//data member
}*/
                                                 
//member functions to describe expense class
void node::create()
{
	char temp[201];
	char temp2[201];
	cout<<"Creating a new expense....."<<endl;
	cout<<"Enter the name of the expense: ";
	cin>>temp;
	name=new char[strlen(temp)+1];
	strcpy(name,temp);
	cout<<"Enter the expense type: (MONTHLY/MISC/TAX/LUXURY) ";
	cin>>temp2;
	cat = new char[strlen(temp2)+1];
	strcpy(cat,temp2);
	cout<<"Enter the cost of the expense: $";
	cin>>cost;
}
void expense::create()
{
	node*current = head;
	head= new node;
	head->create();
	head-> next = current;
}


int main ()
{
	expense exp;
	int choice=0;
	int i;i=0;
	cout<<"Welcome to TONDRE'S BUDGET ANALYZER Program"<<endl;
	cout<<"*******************************************"<<endl;
	cout<<" "<<endl;
while(choice!=5)
	{
	cout<<"Please select from one of the following options"<<endl;
	cout<<" "<<endl;
	cout<<"1. Deposit money into your account"<<endl;
	cout<<" "<<endl;
	cout<<"2. Create an expense"<<endl;
	cout<<" "<<endl;
	cout<<"3. Display the expenses you have entered"<<endl;
	cout<<" "<<endl;
	cout<<"4. Save these expenses to an external file"<<endl;
	cout<<" "<<endl;
	cout<<"5. Choose to quit."<<endl;
	cout<<" "<<endl;
	cout<<"6. Choose to see stored expenses on external file."<<endl;
	cout<<" "<<endl;
	cout<<"Type in a choice."<<endl;
	cout<<" "<<endl;
	
	cin>>choice;
	cout<<" "<<endl;
	switch (choice)
	{
	case 1:		
			cout<<"You chose option 1. You want to deposit some money into your account. "<<endl;
			//exp.income();
			break;
	case 2:
			cout<<"You chose option 2. Create a new expense."<<endl;
            exp.create();
			break;
	case 3:
			cout<<"You chose option 3. Review and display expenses list."<<endl;
		//	exp.read();
			exp.display();
			break;
	case 4:
			cout<<"You chose option 4.Write created expenses to file"<<endl;
			exp.write();
			
	case 5: 
		break;
	case 6:
			cout<<"You chose to see your stored information."<<endl;
			exp.read();
			exp.display();
			break;
	default:
		    cout<<"You have made an illegal choice."<<endl;
	}
	}
	char reply;
    cout << "Press q (or any other key) followed by 'Enter' to quit: ";
    cin >> reply;
	return 0;
}

I can't do option 6. Reading in from external file. I get seg errors

Attachments
Car:MISC:65
Food:Misc:600

Of course, you got memory access exception: initial head == 0 but you are trying to assign new node pointer via this null pointer:

head->name = new char ...

Regrettably you did not set the language specifier into the code tag so no line numbers in your snippet. Next time use code tag properly:
[code=cpluplus] source

[/code]

You must set the 1st node pointer into the head member (you have an empty list at this moment).
Add the code yourself then come back (there are lots of other defects in the code ;)).

sorry i don't understand. you mean i should set head= new node;//i already did. doesn't that set it?

sorry i don't understand. you mean i should set head= new node;//i already did. doesn't that set it?

I'm sorry, but I have to agree with ArkM - there's a ton of mistakes in the provided code. Just go through it, step by step and straighten out the code.

You may also like to see this: http://www.dreamincode.net/forums/showtopic10157.htm

Just scroll down and have a look at the linked list implementation. I thought that this approach could save a load of (future) hassles for you.

Hope this helped!

I know my code isn't cleaned up yet, but i still need to figure out how i am doing my read function wrong.
I have this code for my node, class and member functions

struct node
{
	char *name;//dynamic array for name of expense
	char *cat;//category of expense
	float cost;//cost of expense
	void create();
	node* next;
	
};


class expense
{
private:
	node *head;
public:
    expense();//constructor
	~expense();//destructor
	void create();//function to create expense
	void display();//display function for expenses
    void read();
	void write();
	//void add();//add expenses total 
};
expense::expense()
{
	head = NULL;
	head->cost = 0.0;
}
expense::~expense()
{
	node* current=NULL;
	while(head)
	{
		current = head->next;
		if(head->name)
			delete [] head-> name;
		if(head->cat)
			delete [] head->cat;
		
		delete head;
		head = current;
	}
}
//void expense::add()
//function to add all my expenses. ie. sum of cost from file
void expense::display()
{
	node*current = head;
	while(current)
	{
		cout<<" "<<endl;
        cout<<current->name<<"	"<<current->cat<<"	$"<<current->cost<<endl;
		current = current->next;
	}
}
	
void expense::read()
{
     static const size_t buf_size = 200;
	ifstream infile;
    infile.open("expense.txt");
    
    if (infile.fail()) {
       cout<<"Failed to open the file..." << endl;
       return;
    }
    
	char aray[buf_size];
	node*current = NULL;
	
	memset( aray, 0, buf_size );                    // Set array to zeroes.
	infile.getline(aray,buf_size,':');
	int temp=0;

	while(!infile.eof())
	{
		current = head;                             //Initialize values
		head = NULL;
		head = new node;
		head->name = NULL;
        head->next = NULL;
        head->cat = NULL;
        head->cost=0.0;

		head->next=current;
		head->name = new char[strlen(aray)+1];
		strncpy(head->name, aray, buf_size-1);      // string length
    	infile.getline(aray,buf_size,':'); 
        infile.get();                              // eat colon
		head->cat = new char[strlen(aray)+1];
		strncpy(head->cat, aray, buf_size-1);
		infile.getline(aray,buf_size,':');
		infile.get();
		infile >> head->cost;
        infile.get();//eat the '/n'		
		//outfile.getline(aray,buf_size,'\n');//get cost sort of
		//cout<<aray<<endl;
		//head->cost=temp;
		//infile.get();
    	//infile.getline(aray,buf_size,':');
    	assert(head);
		cout << head->name << ":";
        cout << head->cat << ":";
        cout << head->cost << '\n';
	}

	infile.close();

}

void expense::write()
{
    ofstream outfile;
	outfile.open("expense.txt");
	node *current = head;
	if(!outfile.is_open())
		cout<<"couldn't open the file"<<endl;
	while(current!=NULL)
	{
		outfile<<current->name<<":"<<current->cat<<":"<<current->cost<<'\n';
        cout<<current->name<<":"<<current->cat<<":"<<current->cost<<'\n';
		current=current->next;
	}
	outfile.close();
}

if i can at least understand what i'm doing wrong in these snippes, i'll be able to clean up my code and piece everything together.
i'm getting <bad ptr> errors and seg errors nomatter what i try.
i'm trying to read in from txt file to dynamic array and have these as a linked list. i dnt know how to set my initial node if i have an empty txt file and how to add node at head if i have a txt file with some data.
i've been reading a lot of tutorials but none of them have been helpful for my scenario. they all deal with int data and my data is of char type dynamically allocated and read in from a file.

>i've been reading a lot of tutorials but none of them have been helpful for my scenario.
Without any doubt you didn't understand those tutorials. You have a classic linked list building scenario.

>...they all deal with int data and my data is of char type dynamically allocated and read in from a file.
It does not matter where is your data source. A list does not know any files. It is of no importance what's the node data type. A list node essence is the link to the next node - that's all.

To add a new node:

allocate a new node, fill its data fields, set next member to NULL.
if a list is empty (head == NULL)
   set head to the new node; all done
else 
   find a pointer to the last list node *)
   set this node.next to the new node
endif

*) That's why a good list implementation maintains not only head but also tail pointer! Otherwise you must traverse a list from the head upto the last node on every add node operation.

It seems you don't understand a pointer concept. Look at your code (lines 25-29):

expense::expense()
{
  head = NULL;
  head->cost = 0.0;
}

That's terribly badly!
The 1st statement says: head is a null pointer, it points to nowhere.
The 2nd statement: OK, let this nowhere gets zero to its cost member!
Better start from the beginning, re-read a wonderful tutorial on pointers:
http://eternallyconfuzzled.com/tuts/languages/jsw_tut_pointers.aspx
It seems without that you can't understand our good advices now. Moreover, that's why you didn't understand a lot of tutorials...

i've been reading a lot of tutorials but none of them have been helpful for my scenario. they all deal with int data and my data is of char type dynamically allocated and read in from a file.

A tutorial is supposed to teach you methods of doing something: in this case - "How to build a singly linked list". You could have easily emulated the workings of that list and incorporated it in your own code. Try doing that first, and do not worry about the data types involved in it. It is better to grasp the concepts first before going the whole hog and trying a more complicated program.

It also sounds like you haven't understood the concept of pointers, and I strongly recommend you going through the tutorials that ArkM provided in his post.

I have went through my code and re-did it a bit. Thank you for the help so far. Now I want to know, how can I write the code for my read function, because the one I have doesn't seem to work. I want to be able to call that fucntion before my display function in my list_manager, so that whatever i do to my list, its done, to the expenses i already have stored on file.
here's my updated code

// expenses linked list.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <iostream>
#include <fstream>

using std::memset;
using namespace std;

//linked list node creation
struct node
{
	char name[20];			//dynamic allocation for name
    char cat[10];			//dynamic allocation for category
    float cost;				//$ amount
	node *next;				//links to next node
};

node* head=NULL;
node* current; //used to traverse through list
int option = 0;



void add_expense_at_end()
{
    node *temp, *temp2; //temp pointers
	//char tmp[201]; char tmp2[201];	
    // reserve space for new node and fill it with data
    temp = new node;
	cout<<"Creating an expense..."<<endl;
	cout<<endl;
    cout<<"Enter the name of the expense(characters no space!): ";
    cin>>temp->name;
    cout<<"Enter the category description(characters no space!): (MONTHLY, MISC, RENT, PAYMNT, FUN)  ";
    cin>>temp->cat;
    cout<<"What's the cost of this expense?(numbers only) $";
    cin>>temp->cost;
    temp->next= NULL; //end of node
    
    //link to node
    if(head==NULL)
	{
		head=temp;
        current=head;
    }
	else	//list is not empty
	{                          
		temp2= head;
        while(temp2 -> next != NULL)
		{
            temp2 = temp2 -> next;   //move to next link
		}
        temp2 -> next = temp;
	}
}
       
void display_list()
{
    node *temp;
    temp = head;
    cout<<endl;
    if (temp==NULL)
    cout<<"Empty list"<<endl;
    
    else
    {
        while(temp!=NULL)   //display details for what temp points too
        {
            cout<<"Name: "<<temp->name<<" ";
            cout<<"Category: "<<temp->cat<<" ";
            cout<<"Cost: $"<<temp->cost<<" ";
            if(temp==current)
				cout<<" <--Current node";
			cout<<endl;
            temp = temp->next;
        }                                                
        cout<<"End of expenses!"<<endl;
    }
}

void delete_start_expense()			//delete function for removing an expense from list
{
	node *temp;
	temp = head;
	head = head->next;
	delete temp;
}

void delete_end_expense()
{
	node *temp1, *temp2;
	if (head == NULL)
		cout<<"The list is empty!"<<endl;
	else
	{
		temp1=head;
		if(temp1->next==NULL)
		{
			delete temp1;
			head = NULL;
		}
		else
		{
			while(temp1->next !=NULL)
			{
				temp2 = temp1;
				temp1 = temp1->next;
			}
			delete temp1;
			temp2->next = NULL;
		}
	}
}

void move_current_on()
{
	if(current->next==NULL)
		cout<<"This is the last expense item."<<endl;
	else
	current = current->next;
}

void move_current_back()
{
	if(current==head)
		cout<<"This is the first expense!"<<endl;
	else{
			node *tail;		//pointer declaration
			tail = head;

			while(tail->next != current)
			{
				tail = tail->next;
			}
			current = tail;
	}
}

void linked_list() //linked list manager function
{
	head=NULL;
    do
	{
		 cout<<endl;
		 cout<<"Welcome to the linked-list manager function!"<<endl;
		 display_list();
		 cout<<endl;
         cout<<"Please select an option: "<<endl;
         cout<<endl;
         cout<<"0. Exit the manager (*Save to external file before exiting program to store list)"<<endl;
		 cout<<endl;
         cout<<"1. Add an expense to the end of the list."<<endl;
		 cout<<endl;
		 cout<<"2. Delete first expense from the list."<<endl;
		 cout<<endl;
		 cout<<"3. Delete last expense from the list."<<endl;
		 cout<<endl;
		 cout<<"4. Traverse to next expense by one node."<<endl;
		 cout<<endl;
		 cout<<"5. Traverse the current expense back by one node."<<endl;
		 cout<<endl;
		 cout<<" Enter choice number, followed by enter: ";
         cin>>option;
         cout<<endl;
         switch (option)
         {
                case 1: add_expense_at_end();break;
				case 2: delete_start_expense();break;
				case 3: delete_end_expense();break;
				case 4: move_current_on();break;
				case 5: move_current_back();break;
         }
	}
           
    while (option !=0);
	
}
void write()		//function for writing to external data file
{
	ofstream outfile;
	outfile.open("mylist.txt");
	node *current = head;
	if(!outfile.is_open())
		cout<<"Couldn't open the file"<<endl;
	while(current!=NULL)
	{
		outfile<<current->name<<"~"<<current->cat<<"~"<<current->cost<<'\n';
		cout<<current->name<<"~"<<current->cat<<"~"<<current->cost<<'\n';
		current = current->next;			//link to next expense
	}
	outfile.close();
}

void read()			//read in function
{
	static const size_t buf_size = 200;	//string copy size limit
	ifstream infile;
	infile.open("mylist.txt");
//	infile.open();
	if(infile.fail())
	{
		cout<<"Failed to open file..."<<endl;
		return;
	}
	
	char aray[buf_size];
	node *current= NULL;

	memset (aray, 0, buf_size);
	infile.getline(aray, buf_size,'~');

	while(!infile.eof())
	{
		current = head;
		head = new node;
		head->next = current;
		head->name; //= new char [strlen(aray)+1];
		//strncpy(head->name, aray, buf_size-1);
		infile.getline(aray, buf_size, '~');infile.get();	//eat delimeter
		head->cat; //= new char[strlen(aray)+1];
		//strncpy(head->cat, aray, buf_size-1);
		infile.getline(aray,buf_size,'~');infile.get();		//eat delimeter
		infile>>head->cost;	infile.get();					//eat the newline
		cout<<aray<<endl;
	}
//	infile.close;
}

class income
{
private:
	float balance;
	float cash;
public:
	income();
	void deposit();
	void display_income();
	void withdrawal();
	void write();
};
income::income()
{
	balance = 0.0;
	cash = 0.0;
}

void deposit ()
{
	cout<<"You chose to add some money into your account!"<<endl;
	cout<<endl;
	cout<"Enter the cash amount you have to add: $";
	cin>>cash;
}
void income::write()
{
	ofstream out;
	out.open("money.txt");
	if(!out.is_open())
		cout<<"Couldn't open the file..."<<endl;
	out<<balance<<'\n';
	out.close();
}

int _tmain(int argc, _TCHAR* argv[])
{
//	expense exp;
	int choice=0;
	int i;i=0;
	cout<<"Welcome to TONDRE'S BUDGET ANALYZER Program"<<endl;
	cout<<"*******************************************"<<endl;
	cout<<" "<<endl;
while(choice!=5)
	{
	cout<<"Please select from one of the following options"<<endl;
	cout<<endl;
	cout<<"1. Deposit money into your account"<<endl;
	cout<<endl;
	cout<<"2. Choose to go to expense list manager"<<endl;
	cout<<endl;
	cout<<"3. Choose to save to external file before quitting program"<<endl;
	cout<<endl;
	cout<<"4. Save these expenses to an external file"<<endl;
	cout<<endl;
	cout<<"5. Choose to quit."<<endl;
	cout<<endl;
	cout<<"6. Choose to see stored expenses on external file."<<endl;
	cout<<endl;
	cout<<"Type in a choice."<<endl;
	cout<<endl;
	
	cin>>choice;
	cout<<endl;
	switch (choice)
	{
	case 1:		
			cout<<"You chose option 1. You want to deposit some money into your account. "<<endl;
			//exp.income();
			break;
	case 2:
			cout<<"You chose option 2. Open expense list manager."<<endl;
            linked_list();
			break;
	case 3:
			cout<<"You chose option 3. Save expense to external file."<<endl;
			write();
			break;
	case 4:
			cout<<"You chose option 4.Write created expenses to file"<<endl;
			
	case 5: 
		break;
	case 6:
			cout<<"You chose to see your stored information."<<endl;
			display_list();
			break;
	default:
		    cout<<"You have made an illegal choice."<<endl;
	}
	}
	char reply;
    cout << "Press q (or any other key) followed by 'Enter' to quit: ";
    cin >> reply;
	return 0;
}
// expenses linked list.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <iostream>
#include <fstream>

using std::memset;
using namespace std;

//linked list node creation
struct node
{
	char name[20];			//dynamic allocation for name
    char cat[10];			//dynamic allocation for category
    float cost;				//$ amount
	node *next;				//links to next node
};

node* head=NULL;
node* current; //used to traverse through list
int option = 0;



void add_expense_at_end()
{
    node *temp, *temp2; //temp pointers
	//char tmp[201]; char tmp2[201];	
    // reserve space for new node and fill it with data
    temp = new node;
	cout<<"Creating an expense..."<<endl;
	cout<<endl;
    cout<<"Enter the name of the expense(characters no space!): ";
    cin>>temp->name;
    cout<<"Enter the category description(characters no space!): (MONTHLY, MISC, RENT, PAYMNT, FUN)  ";
    cin>>temp->cat;
    cout<<"What's the cost of this expense?(numbers only) $";
    cin>>temp->cost;
    temp->next= NULL; //end of node
    
    //link to node
    if(head==NULL)
	{
		head=temp;
        current=head;
    }
	else	//list is not empty
	{                          
		temp2= head;
        while(temp2 -> next != NULL)
		{
            temp2 = temp2 -> next;   //move to next link
		}
        temp2 -> next = temp;
	}
}
       
void display_list()
{
    node *temp;
    temp = head;
    cout<<endl;
    if (temp==NULL)
    cout<<"Empty list"<<endl;
    
    else
    {
        while(temp!=NULL)   //display details for what temp points too
        {
            cout<<"Name: "<<temp->name<<" ";
            cout<<"Category: "<<temp->cat<<" ";
            cout<<"Cost: $"<<temp->cost<<" ";
            if(temp==current)
				cout<<" <--Current node";
			cout<<endl;
            temp = temp->next;
        }                                                
        cout<<"End of expenses!"<<endl;
    }
}

void delete_start_expense()			//delete function for removing an expense from list
{
	node *temp;
	temp = head;
	head = head->next;
	delete temp;
}

void delete_end_expense()
{
	node *temp1, *temp2;
	if (head == NULL)
		cout<<"The list is empty!"<<endl;
	else
	{
		temp1=head;
		if(temp1->next==NULL)
		{
			delete temp1;
			head = NULL;
		}
		else
		{
			while(temp1->next !=NULL)
			{
				temp2 = temp1;
				temp1 = temp1->next;
			}
			delete temp1;
			temp2->next = NULL;
		}
	}
}

void move_current_on()
{
	if(current->next==NULL)
		cout<<"This is the last expense item."<<endl;
	else
	current = current->next;
}

void move_current_back()
{
	if(current==head)
		cout<<"This is the first expense!"<<endl;
	else{
			node *tail;		//pointer declaration
			tail = head;

			while(tail->next != current)
			{
				tail = tail->next;
			}
			current = tail;
	}
}

void linked_list() //linked list manager function
{
	head=NULL;
    do
	{
		 cout<<endl;
		 cout<<"Welcome to the linked-list manager function!"<<endl;
		 display_list();
		 cout<<endl;
         cout<<"Please select an option: "<<endl;
         cout<<endl;
         cout<<"0. Exit the manager (*Save to external file before exiting program to store list)"<<endl;
		 cout<<endl;
         cout<<"1. Add an expense to the end of the list."<<endl;
		 cout<<endl;
		 cout<<"2. Delete first expense from the list."<<endl;
		 cout<<endl;
		 cout<<"3. Delete last expense from the list."<<endl;
		 cout<<endl;
		 cout<<"4. Traverse to next expense by one node."<<endl;
		 cout<<endl;
		 cout<<"5. Traverse the current expense back by one node."<<endl;
		 cout<<endl;
		 cout<<" Enter choice number, followed by enter: ";
         cin>>option;
         cout<<endl;
         switch (option)
         {
                case 1: add_expense_at_end();break;
				case 2: delete_start_expense();break;
				case 3: delete_end_expense();break;
				case 4: move_current_on();break;
				case 5: move_current_back();break;
         }
	}
           
    while (option !=0);
	
}
void write()		//function for writing to external data file
{
	ofstream outfile;
	outfile.open("mylist.txt");
	node *current = head;
	if(!outfile.is_open())
		cout<<"Couldn't open the file"<<endl;
	while(current!=NULL)
	{
		outfile<<current->name<<"~"<<current->cat<<"~"<<current->cost<<'\n';
		cout<<current->name<<"~"<<current->cat<<"~"<<current->cost<<'\n';
		current = current->next;			//link to next expense
	}
	outfile.close();
}

void read()			//read in function
{
	static const size_t buf_size = 200;	//string copy size limit
	ifstream infile;
	infile.open("mylist.txt");
//	infile.open();
	if(infile.fail())
	{
		cout<<"Failed to open file..."<<endl;
		return;
	}
	
	char aray[buf_size];
	node *current= NULL;

	memset (aray, 0, buf_size);
	infile.getline(aray, buf_size,'~');

	while(!infile.eof())
	{
		current = head;
		head = new node;
		head->next = current;
		head->name; //= new char [strlen(aray)+1];
		//strncpy(head->name, aray, buf_size-1);
		infile.getline(aray, buf_size, '~');infile.get();	//eat delimeter
		head->cat; //= new char[strlen(aray)+1];
		//strncpy(head->cat, aray, buf_size-1);
		infile.getline(aray,buf_size,'~');infile.get();		//eat delimeter
		infile>>head->cost;	infile.get();					//eat the newline
		cout<<aray<<endl;
	}
//	infile.close;
}

class income
{
private:
	float balance;
	float cash;
public:
	income();
	void deposit();
	void display_income();
	void withdrawal();
	void write();
};
income::income()
{
	balance = 0.0;
	cash = 0.0;
}

void deposit ()
{
	cout<<"You chose to add some money into your account!"<<endl;
	cout<<endl;
	cout<"Enter the cash amount you have to add: $";
	cin>>cash;
}
void income::write()
{
	ofstream out;
	out.open("money.txt");
	if(!out.is_open())
		cout<<"Couldn't open the file..."<<endl;
	out<<balance<<'\n';
	out.close();
}

int _tmain(int argc, _TCHAR* argv[])
{
//	expense exp;
	int choice=0;
	int i;i=0;
	cout<<"Welcome to TONDRE'S BUDGET ANALYZER Program"<<endl;
	cout<<"*******************************************"<<endl;
	cout<<" "<<endl;
while(choice!=5)
	{
	cout<<"Please select from one of the following options"<<endl;
	cout<<endl;
	cout<<"1. Deposit money into your account"<<endl;
	cout<<endl;
	cout<<"2. Choose to go to expense list manager"<<endl;
	cout<<endl;
	cout<<"3. Choose to save to external file before quitting program"<<endl;
	cout<<endl;
	cout<<"4. Save these expenses to an external file"<<endl;
	cout<<endl;
	cout<<"5. Choose to quit."<<endl;
	cout<<endl;
	cout<<"6. Choose to see stored expenses on external file."<<endl;
	cout<<endl;
	cout<<"Type in a choice."<<endl;
	cout<<endl;
	
	cin>>choice;
	cout<<endl;
	switch (choice)
	{
	case 1:		
			cout<<"You chose option 1. You want to deposit some money into your account. "<<endl;
			//exp.income();
			break;
	case 2:
			cout<<"You chose option 2. Open expense list manager."<<endl;
            linked_list();
			break;
	case 3:
			cout<<"You chose option 3. Save expense to external file."<<endl;
			write();
			break;
	case 4:
			cout<<"You chose option 4.Write created expenses to file"<<endl;
			
	case 5: 
		break;
	case 6:
			cout<<"You chose to see your stored information."<<endl;
			display_list();
			break;
	default:
		    cout<<"You have made an illegal choice."<<endl;
	}
	}
	char reply;
    cout << "Press q (or any other key) followed by 'Enter' to quit: ";
    cin >> reply;
	return 0;
}
Attachments
CAR~MONTHLY~67
FOOD~MISC~476
HEAT~MONTHLY~456
This question has already been answered. Start a new discussion instead.