Emergency help, my assignment is due in 24hours

[purplefantasy]

The Acme Software Company sells its "Adding Tutor" software for $109.Quantity discount are given using the following table:
Quantity Discount
10-19 20%
20-49 30%
50-99 40%
100 or more 50%
Write a program that asks for the number of units sold and calculates the total cost of the purchase including discount. Adjust the totalby the sales tax (use 7.75%). Display the total cost, the discount, the sales tax and adjusted amount due. Display a warning and end the program if the number of units sold isnot greater than 0
I have finish but I couldn't calculate and it not work..Can anyone help me please

[Tight_Coder_Ex]

I have finish but I couldn't calculate and it not work

Show us what you've got done so far, so we know what to tell you to correct.

[purplefantasy]

This is what I got so far. Plese help out. I don't know how to do it. I really need help.

//PREPROCESSOR DIRECTIVE
# include <iostream>   //FOR CIN AND COUT
# include <iomanip>
# include <string>

using namespace std;

//Main Function

int main()

{
	//Define Variables
	int      Quantity;            //  QUANTITY OF ITEMS
	
	float    Cost;                //  SALES ITEMS
	float	 Discount;          //  DISCOUNT MONEY
	float	 TaxRate;           // SALE TAXES
	float	 TotalCost;	        // TOTAL AMOUNT FOR EACH ITEM
	float	 AdjustAmount;      // THE AMOUNT DUE

 //DEFINE CONSTANTS
	const double DiscountRate1= 0.00f;    //Rate CODES
	const double DiscountRate2= 0.20f;
	const double DiscountRate3 = 0.30f;
	const double DiscountRate4 = 0.40f;
	const double DiscountRate5 = 0.50f;

	cout.setf(ios::fixed);
	cout.setf(ios::showpoint);
	cout.precision(2);

    cout << "\n\nThe Acme Software Company";  //PROGRAM TITLE
	cout << "\nby Kristen Ngoc, Nguyen";      //PROGRAM AUTHOR

	//ASK USER FOR THE AMOUNT OF UNITS YOU WANT TO PURCHASE

    cout << "\n\nPlease enter the units you want to purchase:";    //INPUT DATA FOR UNITS
	cin  >> Quantity;
    
	//TEST IF QUANTITY IS GREATER THAN 0
	if (Quantity >= 0)
	{
		//DETERMINE THE DISCOUNT RATE

	if (Quantity <10 )
	{
		
		Cost = Quantity * 109;
		Discount = Cost * DiscountRate1;
		TotalCost = Cost - Discount;
		TaxRate = TotalCost *0.0775f;
		AdjustAmount = TotalCost + TaxRate;
	}

	else if (Quantity <20)
	{
		
		Cost = Quantity * 109;
		Discount = Cost * DiscountRate2;
		TotalCost = Cost - Discount;
		TaxRate = TotalCost *0.0775f;
		AdjustAmount = TotalCost + TaxRate;
	}
	else if (Quantity <50)
	{
		
		Cost = Quantity * 109;
		Discount = Cost * DiscountRate3;
		TotalCost = Cost - Discount;
		TaxRate = TotalCost *0.0775f;
		AdjustAmount = TotalCost + TaxRate;
	}
	else if (Quantity <100)
	{
	
		Cost = Quantity * 109;
		Discount = Cost * DiscountRate4;
		TotalCost = Cost - Discount;
		TaxRate = TotalCost *0.0775f;
		AdjustAmount = TotalCost + TaxRate;
	}
	else
	{
		
		Cost = Quantity * 109;
		Discount = Cost * DiscountRate5;
		TotalCost = Cost - Discount;
		TaxRate = TotalCost *0.0775f;
		AdjustAmount = TotalCost + TaxRate;

	}



  //DISPLAY RESULTS
	
	cout << fixed << showpoint << setw (20);
	cout <<"\nSales Results\n";
	cout <<"- - - - - - - - - - \n";
	cout <<"\n" << setw(20) << "Cost $" << "Cost" << endl;
	cout <<"\n" << setw(20) << "Discount rate " << "DiscountRate" << endl;
	cout <<"\n" << setw(20) << "Discount $" << "Discount" << endl;
	cout <<"\n" << setw(20) << "Total Cost $" << "TotalCost" << endl;
	cout <<"\n" << setw(20) << "Sales Taxes $" << "TaxRate" << endl;
	cout <<"\n" << setw(20) << "Adjust Amount $" << "AdjustAmount" << endl;

	}

	else
		
		cout << "Invalid entry\n";
	return 0;
}

[Tight_Coder_Ex]

In all cases remove quotes around bolded section

cout <<"\n" << setw(20) << "Adjust Amount $" << [b]"AdjustAmount"[/b] << endl;

Declare DiscountRate in your application and set its value inside each conditional

cout <<"\n" << setw(20) << "Discount rate " << DiscountRate << endl;

As you've gotten it 95% right, I will post a modified version of this app that you can use as a reference. Don't use it as your assignment or your instructor may get you to explain why you did it that way.

[purplefantasy]

Can you help me make it look right. Because When I did it. It not show the calculation at all. So I think that's not right so we have to use switch or something. Thanks for you help. It due today. It hard when it run.

[Tight_Coder_Ex]

Ok as promised here is my modification based on your algorithym

# include <iostream>
# include <iomanip>
# include <string>
using namespace std;
int main()
{
int Quantity, Disc;
double Cost, Discount, SalesTax;
cout.setf(ios::fixed);
cout.setf(ios::showpoint);
cout.precision(2);
cout << "\n\nThe Acme Software Company\nby Kristen Ngoc, Nguyen"; //PROGRAM AUTHOR
do
{
cout << "\n\nPlease enter the units you want to purchase: "; //INPUT DATA FOR UNITS
cin >> Quantity;
if (Quantity == 0)
	break;
Cost = 109.0 * Quantity;
if (Quantity < 10)
	Disc = 0;
else
	if (Quantity < 20)
	 Disc = 20;
	else
	 if (Quantity < 50)
	 Disc = 30;
	 else
	 if (Quantity < 100)
	 Disc = 40;
	 else
	 Disc = 50;
 
cout << fixed << showpoint << setw (20);
cout <<"\nSales Results\n";
cout <<"- - - - - - - - - - \n";
cout << setw(20) << "Cost" << setw(25) << Cost << endl; 
Discount = Cost * (double (Disc) / 100.0);
cout << setw(20) << "Less" << setw(25) << Discount << " " << Disc << "%" << endl;
cout << setw(20) << "Total Cost" << setw (25) << Cost - Discount << endl;
SalesTax = (Cost - Discount) * .0775;
cout << setw(20) << "7.75% Sales Tax" << setw (25) << SalesTax << endl;
cout << setw (45) << "_________________" << endl;
cout << setw(20) << "Total" << setw (25) << Cost - Discount + SalesTax << endl;
} while (1);
return 0;
}

Basically all I did with your code is eliminate redundancy. Only have conditionals do what they need to rather than duplicate the same code over and over again.

[alc6379]

Please don't label your thread as Urgent-- it implies that your problem is more important than others. Help is given here on a first-come, first-served basis.

http://www.catb.org/~esr/faqs/smart-questions.html#urgent