Question

Project 7-6: Sales Tax Calculator

Create a program that uses a separate module to calculate sales tax and total after tax.

Create a c++ program using console.h and console.cpp files that uses a separate module to calculate sales tax and total after tax.

Console

Sales Tax Calculator

ENTER ITEMS (ENTER 0 TO END)

Cost of item: 35.99

Cost of item: 27.50

Cost of item: 19.59

Cost of item: 0

Total:           83.08

Sales tax:        4.98

Total after tax: 88.06

Again? (y/n): y

ENTER ITEMS (ENTER 0 TO END)

Cost of item: 152.50

Cost of item: 59.80

Cost of item: 0

Total:           212.30

Sales tax:        12.74

Total after tax: 225.04

Again? (y/n): n

Thanks, bye!

Specifications

• The program should only accept numbers that are greater than 0.
• Use the console.h and console.cpp files described in chapter 7 to validate user entries. That way, the user can’t crash the program by entering invalid data.
• The sales tax rate should be 6% of the total.
• Use a header file to declare two functions. One should accept the total of the items and return the tax amount. The other should accept the total of the items and return the total after tax has been added.
• Use the implementation file for this header file to store the sales tax rate and the definitions for these two functions. These functions should round the results to two decimal places.
• The output should display all monetary values with 2 decimal places.
• The output should right align the numbers in the second column. This makes it easier to check whether the calculations are correct.

been added. • Use the implementation file for this header file to store the sales tax rate and the definitions for these two functions. These functions should round the results to two decimal places. • The output should display all monetary values with 2 decimal places. • The output should right align the numbers in the second column. This makes it easier to check whether the calculations are correct.

Answer 1

header file sales.h

#include<iostream>
using namespace std;
float Sales_tax(float total)
{
return 0.06*total;
}
float total_new(float total)
{
float a=Sales_tax(total);
return total+a;
}

main file

#include <iostream>
#include <iomanip>
#include "sales.h"

using namespace std;

int main()
{
cout<<"Sales Tax Calculator"<<endl;
char flag='y';
float cost,total=0;
while(flag=='y')
{
cout<<"ENTER ITEMS(ENTER 0 TO END)"<<endl;
while(1)
{
cout<<"Cost of item: ";
cin>>cost;
if(cost==0)
break;
else
total+=cost;
}
cout<<fixed;
cout<<setprecision(2);
cout<<"Total: "<<total<<endl;
cout<<"Sales tax: "<<Sales_tax(total)<<endl;
cout<<"Total after tax: "<<total_new(total)<<endl;
cout<<"Again?(y/n):";
cin>>flag;
}
}