Implementing a Stack
Hi,
I have used a struct to create this program but don't know how to implement a stack for the below program. Please your help will be much helpful.
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#include <iostream>
#include <string>
#include <sstream>
#include <iomanip>
using namespace std;
struct items_buying {
string productID;
int proQuantity;
float unitPrice;
float lineTotal;
string prodDescription;
} items [3];
void printitems (items_buying items);
void welcomemessage()
{
cout<< setfill(' ')<< setw(27) << " " << setw(15) << " Welcome to Steve's Shop"<< endl<< endl<< endl;
cout<< setfill(' ')<< setw(15) << " " << setw(15) << "INSTRUCTIONS: Please enter the item description, "<< endl;
cout<< setfill(' ')<< setw(29) << " " << setw(15) << "quantity and then price per item."<< endl;
};
char userAnswer;
int main ()
{
start_program:
string myString;
// variable to store intProductId for the generation of auto key ID
int intProductId = 0;
// a float variable to store totalPriceItems
float totalPriceItems = 0;
// string variable to store strID
string strID;
int n = 0;
welcomemessage();
cout<< endl;
//strProductId = "P";
for(n = 0; n<3;n++)
{
cout<< "================================================================================"<< endl;
// 1st input
//intProductId++;
//items[n].productID = intProductId;
// increment intProductId by 1
intProductId++;
// C++11 function overload for integer convesion to string
strID = "P0000"+to_string(intProductId);
items[n].productID = strID;
// 2nd input
cout << "Enter product description: ";
getline (cin,items[n].prodDescription);
cout<< endl;
// 3rd input
cout << "Enter Quantity: ";
getline(cin,myString);
stringstream(myString) >> items[n].proQuantity;
cout<< endl;
// 4th input
cout<< "Enter unit price: "<< char(156)<< " ";
getline(cin,myString);
stringstream(myString) >> items[n].unitPrice;
items[n].lineTotal = items[n].proQuantity * items[n].unitPrice;
totalPriceItems += items[n].lineTotal;
cout<< "================================================================================"<< endl;
// then clear the screen for new input
system("CLS");
}
cout << endl<< "You have entered these items:"<< endl<< endl;
// organise the table
cout << setfill(' ')<< setw(1) << "|" << setw(15) << left<< "Product ID"<< setw(1)<< "|"<< setw(15)<< left<< "Description"<< setw(1) << "|" << setw(5)<< left<< "Quantity"<< setw(2)<< " "<< setw(1)<< "|"<< setw(6)<< left<< "Unit Price"<< setw(2)<< " "<<setw(1)<< "|" << setw(15)<< left << "Line Total"<< endl;
// output the items entered
for (n=0; n<3; n++)
{
printitems (items[n]);
}
cout<< setfill('-')<< setw(1)<< "+"<< setw(15)<< "-"<< setw(1) << "+"<< setw(15)<< "-"<< setw(1)<< "+"<< setw(10)<< "-"<< setw(1)<< "+" << setw(12)<< "-"<< "+" << setw(12)<< "-"<< "+" << endl;
cout<< setfill(' ')<< setw(50)<< " "<< right<< "Subtotal "<< char(156)<< " "<< totalPriceItems<< endl;
cout<< "Tax is: 20%"<< endl;
float totalDue = 0.00, taxAcc = 0.00;
totalDue = (1.20 * totalPriceItems);
cout<< setfill(' ')<< setw(49)<< " "<< right<< "Sales Tax "<< char(156)<< " "<< (totalDue - totalPriceItems)<< endl;
cout<< setfill(' ')<< setw(49)<< " "<< right<< "Total Due "<< char(156)<< " "<< totalDue<< endl;
cout<< "Do you want to start again? ";
cin>> userAnswer;
if (userAnswer=='y'|| userAnswer =='Y')
{
goto start_program;
}
else
{
goto end_program;
}
end_program:
cout<< "Press Enter to exit...";
cin.ignore();
}
// print function to display all the items bought
void printitems (items_buying items)
{
cout<< setfill('-')<< setw(1)<< "+"<< setw(15)<< "-"<< setw(1)<< "+"<< setw(15)<< "-"<< setw(1) << "+"<< setw(10)<< "-"<< setw(1)<< "+"<< setw(12)<< "-"<< setw(1)<< "+" << setw(12)<< "-"<< "+" << endl;
cout<< setfill(' ')<< setw(1)<< "|"<< setw(15)<< left<< (items.productID)<< setw(1)<< "|"<< setw(15)<< left<< items.prodDescription<< setw(1)<< "|"<< items.proQuantity<< setw(1)<< setw(8)<< " "<< "|"<< setw(4)<< left<< setprecision(6)<< items.unitPrice<< setw(6)<< " "<< setw(1)<< "|"<< setw(12)<< right<< items.lineTotal<< "|"<< endl;
}
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