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#include <iostream>
#include <iomanip>
#include <fstream>
#include <cstdlib>
using namespace std;
//My function prototypes
bool getdata(double &length, double &width, double &customerDiscount , double &costPerSQ);
void calculate (double length, double width, double customerDiscount , double costPerSQ);
double calcInstall(double length, double width, double costPerSQ);
double calcSubTotal ( double installedPrice, double customerDiscount);
double calcTotaL( double subTotal);
void printResult( double length,double width,double customerDiscount, double installPrice, double costPerSQ, double subTotal, double total );
void printMeasurement (double length, double width);
void printCharges(double length,double width,double customerDiscount, double installPrice, double costPerSQ, double subTotal, double total );
const double LABOR= 0.35; // my constant variables
const double TAXRATE= 8.5;
ofstream outfile; //creates an output file
int main()
{
outfile.open ("output.txt"); //opens output file
if (!outfile.is_open()) { //check to see if file was opened
cout << endl << "ERROR:Unable to open file"<<endl;
system ("PAUSE");
exit(1);
}
double length, width, customerDiscount,costPerSQ;
while (getdata(length,width,customerDiscount,costPerSQ)) {
calculate (length,width,customerDiscount,costPerSQ);
} //end of while loop
system ("PAUSE");
outfile.close(); //closes out file
return 0;
} //end of main
//Function to get data that gets computed
/************************************************************************************/
bool getdata(double &length, double &width, double &customerDiscount , double &costPerSQ) {
cout << "Length of room (feet)? ";
cin >> length;
if (length == 0) {
return false;
}
cout << "Width of room(feet)? ";
cin >> width;
cout << "Customer discount (percent)? " ;
cin >> customerDiscount;
cout << "Cost per square foot (xxx.xx)? ";
cin >> costPerSQ;
return true;
}
//calls three function to do the calculations
/************************************************************************************/
void calculate (double length, double width, double customerDiscount , double costPerSQ) {
double installPrice = calcInstall(length,width,costPerSQ);
double subTotal = calcSubTotal(installPrice,customerDiscount);
double total= calcTotaL(subTotal);
printResult(length,width,customerDiscount,installPrice,costPerSQ,subTotal,total);
}
//Prints results with help from two other functions
/***********************************************************************************/
void printResult( double length,double width,double customerDiscount, double installPrice, double costPerSQ, double subTotal, double total ) {
cout <<" ---------------------CARPET STORE"<<endl;
cout <<" Owner"<<endl<<endl;
printMeasurement(length, width);
cout << endl;
printCharges( length, width,customerDiscount,installPrice,costPerSQ, subTotal, total );
cout << endl;
}
//calculated the install price
/***********************************************************************************/
double calcInstall(double length, double width,double costPerSQ) {
double area= length * width;
return area * costPerSQ + area * LABOR;
}
//calculated the subtotal
/**********************************************************************************/
double calcSubTotal(double installPrice, double customerDiscount) {
return installPrice * (1- customerDiscount/ 100);
}
//calculate the total
/**********************************************************************************/
double calcTotaL(double subTotal) {
return subTotal * ( 1 + TAXRATE /100);
}
//prints out the measurements data
/**********************************************************************************/
void printMeasurement (double length, double width) {
cout <<setw(30)<<"MEASUREMENT"<<endl<<endl;
cout <<" "<<setw(10)<<left<<"Length" <<setw(10)<<right<<setprecision(2)<<fixed<<length<<" feet\n";
cout <<" "<<setw(10)<<left<< "Width" <<setw(10)<<right<<setprecision(2)<<fixed<<width << " feet\n";
cout <<" "<<setw(10)<<left<<"Area"<<setw(10)<<right<<setprecision(2)<<fixed<<length * width << " square feet\n";
}
//prints out the charges data
/**********************************************************************************/
void printCharges(double length,double width,double customerDiscount, double installPrice, double costPerSQ, double subTotal, double total ) {
cout << " CHARGES\n\n";
cout <<setw(19)<<left<<"DESCRIPTION"<<setw(15)<<"COST/SQ.FT."<<setw(14)<<right<<"CHARGES/ROOM\n";
cout <<setw(19)<<left<<"Carpet"<< setw(10)<<right<<costPerSQ<<setprecision(2)<<fixed<<setw(14)<<right<< setw(10)<<"$" << length* width* costPerSQ<<endl;
cout <<setw(19)<<left<<"Labor "<<setw(10)<<right<<LABOR<<setprecision(2)<<fixed<<setw(14)<<right<< LABOR*length*width<<endl;
cout <<setw(19)<<left<<" --------"<<endl<<endl;
cout <<setw(19)<<left<<"INSTALLED PRICE"<<setw(24)<<right<<"$"<<installPrice<<endl;
cout <<setw(19)<<left<<"Discount"<<setw(10)<<right<<customerDiscount<<"%"<<setw(20)<<right<<installPrice*customerDiscount/100<<endl;
cout <<setw(19)<<left<<" --------"<<endl<<endl;
cout <<setw(19)<<left<<"SUBTOTAL"<<setw(24)<<right<<"$"<<subTotal<< endl;
cout <<setw(19)<<left<<"Tax"<<setw(28)<<right<< subTotal * TAXRATE / 100<< endl;
cout <<setw(19)<<left<<"TOTAL"<<setw(23)<<right<<"$"<<total<<endl;
}
/**********************************************************************************/
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