program that uses multiple funtions

Hi could someone please take a look at this program and let me know what is needed to make it right. first of all i cant get the formating of the numbers right. i have tried set precision and fixed but some thing is wrong. as far as my funtions go there are some blank ones that im working on but i am wondering before i get to far if what i have is correct. thanks for any help that you can offer. i have attached the source code

The code is gonna have to be in a more readable format that that, sorry.

I get to many warnings in link: argc, argv and discount are never used in function main(int,char**)

James

>>The code is gonna have to be in a more readable format that that, sorry.

I agree. Relly the first thing they should teach new programmers is how to lay out thier code.

What would probably help him are suggestions how to achieve better readability...


Watch those linebreaks. Set them at logical borders. Only one at a time. Example of better formatting:

Code:

int main( int argc, char* argv[] )
{
	int length = 0;
	int width = 0;
	int area = 0;
	double discount = 0;

	cout << "Length of room (feet)? ";
	cin >> length;

	cout << "Width of room (feet)? ";
	cin >> width;

	cout << "Customer discount (precent)? ";
	cin >> precentDis;

	cout << "Cost per square foot (xxx.xx)? ";
	cin >> priceCarpet;

Each logical Unit ( Ask for input X, get input X ) now resides in one optical block.

Also, use more spaces. Don't put all your code into one line without breaks. Breaks at logical borders make reading easier.

Indentation:
each { forces an additional level of indentation, each } takes one back. In your main, the variable declarations are on the same line as the {. Put a tab there for each line. Other functions miss tabs at all.

As you know how to use arguments and return data in functions, get rid of the global variables.

#include <iostream.h> // add library
#include <iomanip.h>

const double LABOR_COST = 0.35;
// define constant
const double TAX_RATE = 8.5;



double priceCarpet; //global variables
int precentDis=0;
double discount=0;

void getData (void); // funtion prototypes
void calculate (void);
double calcInstall (double price, double labor);
double calcSubTotal (double sub);
double calcTotal (double total);
void printResult (void);
void printMeasurement (void);
void printCharges (void);





int main(int argc, char* argv[])
{
int length=0; // declare variables
int width=0;
int area=0;
double discount=0;




cout<<"Length of room (feet)? ";
cin>>length;

cout<<"Width of room (feet)? ";
cin>>width;

cout<<"Customer discount (precent)? ";
cin>>precentDis;

cout<<"Cost per square foot (xxx.xx)? ";
cin>>priceCarpet;

cout<<""<<endl;
cout<<setw(23)<<"MEASURMENT"<<endl;
cout<<""<<endl;

cout<<"Length "<<setw(16)<<length<<" feet"<<endl;

cout<<"Width"<<setw(18)<<width<<" feet"<<endl;

area=width*length;
cout<<"Area"<<setw(19)<<area<<" square feet\n"<<endl;


cout<<setw(20)<<"CHARGES"<<endl;
cout<<""<<endl;
cout<<"DESCRIPTION\tCOST/SQ.FT.\tCHARGE/ROOM"<<endl;
cout<<"-----------\t";
cout<<"-----------\t";
cout<<"-----------"<<endl;


cout<<"Carpet"<<setw(20)<<priceCarpet<<setw(17)<<p riceCarpet*area<<endl;

cout<<"Labor"<<setw(21)<<LABOR_COST<<setw(15)<<LAB OR_COST*area<<endl;
cout<<"\t\t\t\t-----------";
cout<<""<<endl;



calculate(); //call funtion calculate



return 0;
}


void getData (void)
{


}

void calculate (void)

{

double price=0; // calcInstall variable
double labor=0; // calcInstall variable
double total=0; // calTotal variable
double sub=0; // calcSubTotal variable
double tax=0;


priceCarpet= calcInstall(price, labor);// call funtion calcInstall

discount=priceCarpet*precentDis;
cout<<"Discount"<<setw(17)<<precentDis<<'%'<<setio sflags(ios::showpoint)
<<setw(14)<<discount<<endl;
cout<<"\t\t\t\t-----------";
cout<<""<<endl;


sub=calcSubTotal(sub);// call funtion calcSubTotal

tax=sub*TAX_RATE;
cout<<"Tax"<<setiosflags(ios::showpoint)<<setw(42) <<tax<<endl;

total=calcTotal(total);// call funtion calcTotal
}

double calcInstall (double price , double labor)
{

price=priceCarpet*100;
labor=LABOR_COST*100;
cout<<"INSTALLED PRICE"<<setiosflags(ios::showpoint)
<<setw(18)<<'$'<<priceCarpet<<endl;

return (price+labor);
}




double calcSubTotal(double sub)

{

sub=priceCarpet*100-discount;
cout<<"SUBTOTAL"<<setiosflags(ios::showpoint)
<<setw(25)<<'$'<<sub<<endl;

return(sub);
}





double calcTotal(double total)

{


total=priceCarpet-precentDis*TAX_RATE;
cout<<"TOTAL"<<setiosflags(ios::showpoint)
<<setw(28)<<setprecision(6)<<'$'<<total<<endl;


return(total);
}



void printResult (void)
{


}



void printMeasurement (void)
{




}




void printCharges (void)
{





}