Thread: Need a hand formatting numbers.

Here is my program it works how I would like it to but I can't seem to get formatting down. I want to round the numbers off in the dollar output. In some cases it is giving me 3 numbers in the cents column. I know there is a way to do it using floats but I can't seem to find the info on how to do it. My book isn't much help. Also in a couple cases I am setting a variable from another and I am unsure how to use ( char variable[25] ). You can see some of my variables have pointers and my teacher doesn't want me to use them yet. Thanks in advance.

Code:

#include <iostream>
#include <iomanip>
using namespace std;


const double RED_RUG = 4.99;
const double GREEN_RUG = 5.99;
const double BLUE_RUG = 6.99;







int main(void)

{
    char* discount;
	char customerName[25];
	char rugColor;
    char paymentMethod;
	int roomLength;
    int roomWidth;                                            //variables
	char* rugDisplay;
	char* discountPercent;
	int roomArea;
	double endDiscount;
	double paidDiscount;
	double rugCost;
	double carpetCost;
	double trueCost;

	cout<<setw(20)<<"Welcome to..."<<endl;
	cout<<endl;
	cout<<setw(40)<<">>>Phils Floors<<<<"<<endl;                     //business header-output to screen
	cout<<endl;
	cout<<setw(37)<<"Our Rugs Rock"<<endl;
	cout<<endl;


	cout<<"If you enter the customers name, type of rug purchased,"<<endl;
    cout<<"room dimensions, and type of payment, this program"<<endl;       //program explaination
    cout<<"will calculate and print a bill to the screen"<<endl;
	cout<<endl;
	

	cout<<"Please enter the customers name: ";
	cin.getline(customerName,25);                                //input customers name

	cout<<endl;

	cout<<"Please enter rug color (R)ed (B)lue (G)reen: ";
    cin>>rugColor;                                               //input rug color

	cout<<endl;

	if (rugColor == 'R' || rugColor == 'r')
	{
		rugDisplay = "RED";
		rugCost = RED_RUG;
	}
	else
		if (rugColor == 'B' || rugColor == 'b')
	{
		rugDisplay = "BLUE";                                     //set rugdisplay variable and cost of rug
		rugCost = BLUE_RUG;                                          
	}
	else
		if(rugColor == 'G' || rugColor == 'g')
	{
		rugDisplay = "GREEN";
		rugCost = GREEN_RUG;
	}
    else
	{
		rugDisplay = "N/A";
		rugCost = 6.99;
	}
	 
    cout<<endl;

    cout<<"Please enter the method of payment"<<endl;
	cout<<"(C)ash (Z)ippy or (O)ther: ";
	cin>>paymentMethod;                                           //input payment method
 
    if (paymentMethod == 'C' || paymentMethod == 'c')
		paidDiscount = .10;

	else if (paymentMethod == 'Z' || paymentMethod == 'z')        //set paidDiscount variable to use in calculation
	    paidDiscount = .05;

	else 
	    paidDiscount = 1;


	if (paymentMethod == 'C' || paymentMethod == 'c')
	{
		 discount = "Cash and Carry";
		 discountPercent = "10% -- Cash and Carry";
	}
	else if (paymentMethod == 'Z' || paymentMethod == 'z')
	{
    	 discount = "Zippy Discount";                             //set discount variables (output messages)
         discountPercent = "5% -- Zippy Discount";

	}

	     
	else if (paymentMethod == 'O' || paymentMethod == 'o')
	{
	     discount = "No Discount";
		 discountPercent = "No Discount";
	}
	    
	else 
	     discount = "No discount type specified";
	
	
	cout<<endl;

	cout<<"Enter the Length of your room: ";                        //input room length
	cin>>roomLength;
	cout<<endl;

	cout<<"Enter the Width of your room: ";
	cin>>roomWidth;                                                 //input room width


     
	roomArea = (roomWidth * roomLength);                            //calculate room area

    carpetCost = (roomArea * rugCost);                              //calculate rug cost

    endDiscount = (roomArea * rugCost * paidDiscount);              //calculate discount

    trueCost = (carpetCost - endDiscount);                          //calculate carpet cost minus the discount (truecost)



	
	cout<<setw(40)<<">>>Phil's Floors<<<<"<<endl;
	cout<<endl;                                                     //output header
	cout<<setw(37)<<"Our Rugs Rock"<<endl;
	cout<<endl;

	cout<<"Customer Name:"<<setw(26)<<customerName<<endl;           //output customer name
	cout<<endl;

	cout<<"Rug Color:"<<setw(30)<<rugDisplay<<endl;                 //output rugcolor
	cout<<endl;

	cout<<"Payment Method:"<<setw(25)<<discount<<endl;              //output payment method
	cout<<endl;

	cout<<setw(30)<<discountPercent<<endl;                          //output discount percent message
	cout<<endl;

	
    
    	
    cout<<"Discount: "<<setw(26)<<"$"<<endDiscount<<endl;           //output discount
	cout<<endl;
    
	cout<<"Rug Cost: "<<setw(25)<<"$"<<carpetCost<<endl;            //output carpet cost (before discount)


	cout<<"Final Cost:"<<setw(24)<<"$"<<trueCost<<endl;             //output carpet cost(final cost-after discount)



	
	return 0;

Welcome to...

>>>Phils Floors<<<<

Our Rugs Rock

If you enter the customers name, type of rug purchased,
room dimensions, and type of payment, this program
will calculate and print a bill to the screen

Please enter the customers name: Phil KCustomer

Please enter rug color (R)ed (B)lue (G)reen: r


Please enter the method of payment
(C)ash (Z)ippy or (O)ther: c

Enter the Length of your room: 6

Enter the Width of your room: 8
>>>Phil's Floors<<<<

Our Rugs Rock

Customer Name: Phil KCustomer

Rug Color: RED

Payment Method: Cash and Carry

10% -- Cash and Carry

Discount: $23.952

Rug Cost: $239.52
Final Cost: $215.568
Press any key to continue

here is the output...as you can see in the discount and final cost I am getting 3 numbers as opposed to two like it should be when talking about money. I'm not sure how to get these rounded off. I am not familiar with the command that you suggested to use for the pointer also. I am really only supposed to use char variable[25] command. How would I use that when I set a variable from another one?

Code:

cout<<setprecision(2)<<"Final Cost:"<<setw(24)<<"$"<<trueCost<<endl;

that's what I was looking for...thanks. My book tells me this is the correct format to to make sure I have #include <iomanip> which I do. The problem now is when I stick that in there I get some really funky output: Any thoughts about what I am doing wrong now?
Welcome to...

>>>Phils Floors<<<<

Our Rugs Rock

If you enter the customers name, type of rug purchased,
room dimensions, and type of payment, this program
will calculate and print a bill to the screen

Please enter the customers name: Phil Customer

Please enter rug color (R)ed (B)lue (G)reen: r


Please enter the method of payment
(C)ash (Z)ippy or (O)ther: c

Enter the Length of your room: 6

Enter the Width of your room: 8
>>>Phil's Floors<<<<

Our Rugs Rock

Customer Name: Phil Customer

Rug Color: RED

Payment Method: Cash and Carry

10% -- Cash and Carry

Discount: $23.952

Rug Cost: $239.52
Final Cost: $2.2e+002
Press any key to continue


I just put the setprecision command in the final cost line and that is what I am getting as output =/

just saw your edited post...gonna give that a shot.

that did it...thanks a million needed that cout<<setiosflags(ios::fixed); line in there. My other problem might be a bit tough. I am just intro to C++ in college and not supposed to be using arrays just cin.getline. We haven't gotten into strcpy or CString yet. So should I rewrite my code to avoid setting variable off of other ones?

basically I am looking for a variable type that can store about 40 characters with spaces for the output messages and I am not allowed to use pointers or char*. If ya look at the code I am setting variables from the user selection. For example when they hit the c (for cash) key I set the discount variable (which is just text output) to "10% -- cash and carry". I need a variable type that can store this.

Just use string. You already #include <string> and use it in your code from other posts, so use it here.

string discount;
string discountPercent;

...

discount = "Cash and Carry";
discountPercent = "10% -- Cash and Carry";