Data Structure (C++) Help!!!

1) write a simple Point Of Sales system
2) Interface in DOS mode only
3) use binary file to keep the daily sales
4) try your creativity to create it different from other group
5) must use ADT link list, Stack or Queue
6) submit report with formal cover page project, printed source code and screen shot.

 

my plan of doing tis programming is:
1)File opening storing items with price
2)Body:
type the code of the items,price wil come out
require user to type quantity
quantity times the price wil get the total prices
total up the total prices(for many items)
delete the items tat was inputted wrongly
queue up items tat have been sold the most in terms of quantity
destroy the whole list of the inputs
3)Output: DOS interface with the total sales with details of items,quantity sold, total sold and grand total
4)Output files: textpad files tat store daily sales n convert them in binary files so ppl can't c the codings

Questions:
how to do it in C++ programming coding?
how to store files in binary?

here's the library n implementation(resource) file i've done

1st library

#include "StackException.h"
const int MAX_STACK = maximum-size-of-stack;
typedef desired-type-of-stack-item StackItemType;

/** @class Stack
* ADT stack - Array-based implementation. */
class Stack
{
public:
// constructors and destructor:
/** Default constructor. */
Stack();
// copy constructor and destructor are
// supplied by the compiler

// stack operations:
/** Determines whether this stack is empty.
* @pre None.
* @post None.
* @return True if this stack is empty; otherwise returns
* false. */
bool isEmpty() const;

/** Adds an item to the top of this stack.
* @pre newItem is the item to be added.
* @post If the insertion is successful, newItem is on the top
* of this stack.
* @param newItem The given StackItemType.
* @throw StackException If the item cannot be placed on this
* stack. */
void push(const StackItemType& newItem) throw(StackException);

/** Removes the top of this stack.
* @pre None.
* @post If this stack is not empty, the item that was added most
* recently is removed. However, if this stack is empty,
* deletion is impossible.
* @throw StackException If this stack is empty. */
void pop() throw(StackException);

/** Retrieves and removes the top of this stack.
* @pre None.
* @post If this stack is not empty, stackTop contains the item
* that was added most recently and the item is
* removed. However, if this stack is empty, deletion is
* impossible and stackTop is unchanged.
* @throw StackException If this stack is empty. */
void pop(StackItemType& stackTop) throw(StackException);

/** Retrieves the top of this stack.
* @pre None.
* @post If this stack is not empty, stackTop contains the item
* that was added most recently. However, if this stack is
* empty, the operation fails and stackTop is
* unchanged. This stack is unchanged.
* @throw StackException If this stack is empty. */
void getTop(StackItemType& stackTop) const
throw(StackException);

private:
/** Array of stack items */
StackItemType items[MAX_STACK];
/** Index to top of stack */
int top;
}; // end Stack

class StackA
{
public:
StackA(void);
public:
~StackA(void);
};
// End of header file.


2nd library

#include <stdexcept>
#include <string>

using namespace std;

/** @class StackException
* Exception class throw by ADT stack. */
class StackException : public logic_error
{
public:
StackException(const string& message = "")
: logic_error(message.c_str())
{} // end constructor
}; // end StackException


implementation (resource) file

#include "Stacka.h" // Stack class specification file

Stack::Stack() : top(-1)
{
} // end default constructor

bool Stack::isEmpty() const
{
return top < 0;
} // end isEmpty

void Stack:ush(const StackItemType& newItem)
throw(StackException)
{
// if stack has no more room for another item
if (top >= MAX_STACK-1)
throw StackException("StackException: stack full on push");
else
{ ++top;
items[top] = newItem;
} // end if
} // end push

void Stack:op() throw(StackException)
{
if (isEmpty())
throw StackException("StackException: stack empty on pop");
else
--top; // stack is not empty; pop top
} // end pop

void Stack:op(StackItemType& stackTop) throw(StackException)
{
if (isEmpty())
throw StackException("StackException: stack empty on pop");
else
{ // stack is not empty; retrieve top
stackTop = items[top];
--top; // pop top
} // end if
} // end pop

void Stack::getTop(StackItemType& stackTop) const throw(StackException)
{
if (isEmpty())
throw StackException("StackException: stack empty on getTop");
else
// stack is not empty; retrieve top
stackTop = items[top];
} // end getTop
// End of implementation file.


Main(source) file

#include <iostream>
#include <string>
#include <fstream>
#include <math.h>
#include <StackA.h>
#include <StackException.h>
#include <StackA.cpp>
using namespace std;

ifstream inFile("input.txt")
?
?
?
HELP ME!!! I think til my brain explode oso cannot figure out how to do the rest...

 

i'd help you but i don't know c++ XD

 

huh. i'm run out of ideas.
most of my coursemates who are dealing with tis question is oso out of ideas.
ask lecturer, after he talk nonsense, oso no ideas.
find internet, i got tis:

#include <iostream>
#include <iomanip>

using namespace std;

void display_menu();
void tax();
float total = 0;

int main()
{
char choice;
display_menu();
cout << setiosflags(ios::showpoint) << setiosflags(ios::fixed) << setprecision(2);
while {
cout << "Welcome to the Rodeo Snack Bar!" << endl;
cout << "Your current total is: $"<< total << endl;
cout << "Please enter the letter of your selection: ";
cin >> choice;
cout << endl;
switch (choice) {
case 'S': case 's':
cout << "Sandwich - $5.00" << endl;
total+=5;
display_menu();
break;
case 'C': case 'c':
cout << "Chips - $1.50" << endl;
total+=1.5;
display_menu();
break;
case 'P': case 'p':
cout << "Pickle - $0.75" << endl;
total+=.75;
display_menu();
break;
case 'B': case 'b':
cout << "Brownie - $1.00" << endl;
total+=1;
display_menu();
break;
case 'R': case 'r':
cout << "Regular Drink - $2.00" << endl;
total+=2;
display_menu();
break;
case 'L': case 'l':
cout << "Large Drink - $3.50" << endl;
total+=3.5;

but stil no ideas
display_menu();
break;
case 'X' : case 'x':
cout << "Canceled, please start over." << endl;
total = 0;
display_menu();
break;
case 'T' : case 't':
tax();
break;
default:
display_menu();
}
}
}

void display_menu()
{
cout << endl;
cout << "S - Sandwich $5.00" << endl;
cout << "C - Chips $1.50" << endl;
cout << "P - Pickle $0.75" << endl;
cout << "B - Brownie $1.00" << endl;
cout << "R - Regular Drink $2.00" << endl;
cout << "L - Large Drink $3.50" << endl;
cout << "X - Cancel sale and start over" << endl;
cout << "T - Total the sale" << endl;
cout << "All items have additional 8.25% tax." << endl;
}


void tax(float total)

cout << "Sub-total: " << total << endl;
cout << "+ Tax : " << total*0.0825 << endl;
cout << "Total : " << total + (total*0.0825)<< endl;

 

arg i took basic c++ so im not sure. can u put the ordered items in a 2d array and if toggled X/x, you can select which item(s) to delete. and the array will total up the sum as you add/delete stuffs from it. This way u wont have to cancel the whole menu and set total to 0. Also you might want to count how many items are being ordered so something like

int count = 0;
int itemNum [100];
char itemCode [100];
float itemPrice [100];

for (int i = 0, i < 100, i++){
itemPrice = 0;
itemNum = i+1;
}

and then the switch thing.

then whenever you toggle X/x, bring up itemNum, itemCode and itemPrice. and use build-in array functions to help you take things off.

 

also i ran the program above, the while loop needs a fix, and this whole junk here
cin >> choice;
cout << endl;
switch (choice) {
case 'S': case 's':
cout << "Sandwich - $5.00" << endl;
total+=5;
display_menu();
break;
case 'C': case 'c':
cout << "Chips - $1.50" << endl;
total+=1.5;
display_menu();
break;
case 'P': case 'p':
cout << "Pickle - $0.75" << endl;
total+=.75;
display_menu();
break;
case 'B': case 'b':
cout << "Brownie - $1.00" << endl;
total+=1;
display_menu();
break;
case 'R': case 'r':
cout << "Regular Drink - $2.00" << endl;
total+=2;
display_menu();
break;
case 'L': case 'l':
cout << "Large Drink - $3.50" << endl;
total+=3.5;

but stil no ideas
display_menu();
break;
case 'X' : case 'x':
cout << "Canceled, please start over." << endl;
total = 0;
display_menu();
break;
case 'T' : case 't':
tax();
break;
default:
display_menu();

should be a function