Question

Alright, so I'm on my last program, and I've set it up so there is no syntax errors.

Though, there seems to be a few logic errors. When I execute it, I get these crazy numbers.

Answer 1

//Ashton Dreiling
//Monthly sales tax exercise
#include <iostream>
#include <stdlib.h>

using namespace std;

//module prototypes
void calculateCountySalesTax(double &countyTax, double &monthySales);
void calculateStateSalesTax(double &monthlySales, double &stateTax);

//global constants to help with mathematical expressions
const double STATE_SALES_TAX_RATE = 4;
const double COUNTY_SALES_TAX = 0.2;


int main()
{ //some variables
double monthlySales;
double countyTax;
double stateTax;
double totalSalesTax;

cout << "Today we are going to be calculating your total sales tax."<< endl;
cout << "Please enter your total monthly sales." << endl;
cin >> monthlySales;
cout << "You put that your monthly sales are " << monthlySales << endl;
cout << "We will now calculate your county sales tax." << endl;
//moving to module calculateCountySalesTax
calculateCountySalesTax(countyTax, monthlySales);
cout << "Your county sales tax is $" << countyTax << endl;
cout << "We will now calculate your state sales tax." << endl ;
//moving to module calculateStateSalesTax
calculateCountySalesTax(stateTax, monthlySales);
cout << "Your state sales tax is $" << stateTax << endl;
cout << "Now, give us a minute to calculate your total." << endl;

//total sales tax
totalSalesTax = stateTax + countyTax;

cout << "Your total sales tax is $" << totalSalesTax << endl;


system("Pause");

return 0;
}//end main

void calculateCountySalesTax(double &monthlySales, double &countyTax)
{
countyTax = monthlySales * COUNTY_SALES_TAX;
}//end calculateCountySalesTax

void calculateStateSalesTax(double &monthlySales, double &stateTax)
{
stateTax = monthlySales * STATE_SALES_TAX_RATE;
}//end calculateStateSalesTax

Answer 2

@Sachintha

Answer 3

State sales tax = monthly sales * 0.04
County sales tax = monthly sales + 0.02

Add these 2 to get total sales tax.

Used this from someone in the math section.

Answer 4

I fixed void calculateCountySalesTax(double &monthlySales, double &countyTax)
{
countyTax = monthlySales + COUNTY_SALES_TAX;
}//end calculateCountySalesTax

But I'm still getting odd numbers

Answer 5

void calculateCountySalesTax(double &countyTaxmonthlySales, double &monthlySales)
{
countyTax = monthlySales + COUNTY_SALES_TAX;
}//end calculateCountySalesTax

Answer 6

What's different?

Answer 7

http://prntscr.com/bfu3w6

How does this look ?

@Sachintha

Answer 8

This one works perfectly.

//Ashton Dreiling
//Monthly sales tax exercise
#include <iostream>
#include <stdlib.h>

using namespace std;

//module prototypes
void calculateCountySalesTax(double &countyTax, double &monthySales);
void calculateStateSalesTax(double &monthlySales, double &stateTax);

//global constants to help with mathematical expressions
const double STATE_SALES_TAX_RATE = 4;
const double COUNTY_SALES_TAX = 0.2;


int main()
{ //some variables
double monthlySales;
double countyTax;
double stateTax;
double totalSalesTax;

cout << "Today we are going to be calculating your total sales tax."<< endl;
cout << "Please enter your total monthly sales." << endl;
cin >> monthlySales;
cout << "You put that your monthly sales are " << monthlySales << endl;
cout << "We will now calculate your county sales tax." << endl;
//moving to module calculateCountySalesTax
calculateCountySalesTax(countyTax, monthlySales);
cout << "Your county sales tax is $" << countyTax << endl;
cout << "We will now calculate your state sales tax." << endl ;
//moving to module calculateStateSalesTax
calculateStateSalesTax(monthlySales, stateTax);
cout << "Your state sales tax is $" << stateTax << endl;
cout << "Now, give us a minute to calculate your total." << endl;

//total sales tax
totalSalesTax = stateTax + countyTax;

cout << "Your total sales tax is $" << totalSalesTax << endl;


system("Pause");

return 0;
}//end main

void calculateCountySalesTax(double &countyTax, double &monthlySales)
{
countyTax = monthlySales + COUNTY_SALES_TAX;
}//end calculateCountySalesTax

void calculateStateSalesTax(double &monthlySales, double &stateTax)
{
stateTax = monthlySales * STATE_SALES_TAX_RATE;
}//end calculateStateSalesTax

Answer 9

I have marked in red the mistake you have done. You have repeated the same function and has changed the order of parameters.



//Ashton Dreiling
//Monthly sales tax exercise
#include <iostream>
#include <stdlib.h>

using namespace std;

//module prototypes
void calculateCountySalesTax(double &countyTax, double &monthySales);
void calculateStateSalesTax(double &monthlySales, double &stateTax);

//global constants to help with mathematical expressions
const double STATE_SALES_TAX_RATE = 4;
const double COUNTY_SALES_TAX = 0.2;


int main()
{ //some variables
double monthlySales;
double countyTax;
double stateTax;
double totalSalesTax;

cout << "Today we are going to be calculating your total sales tax."<< endl;
cout << "Please enter your total monthly sales." << endl;
cin >> monthlySales;
cout << "You put that your monthly sales are " << monthlySales << endl;
cout << "We will now calculate your county sales tax." << endl;
//moving to module calculateCountySalesTax
calculateCountySalesTax(countyTax, monthlySales);
cout << "Your county sales tax is $" << countyTax << endl;
cout << "We will now calculate your state sales tax." << endl ;
//moving to module calculateStateSalesTax
\(\sf\color{red}{calculateCountySalesTax(stateTax, monthlySales);}\)
cout << "Your state sales tax is $" << stateTax << endl;
cout << "Now, give us a minute to calculate your total." << endl;

//total sales tax
totalSalesTax = stateTax + countyTax;

cout << "Your total sales tax is $" << totalSalesTax << endl;


system("Pause");

return 0;
}//end main

void calculateCountySalesTax(double &monthlySales, double &countyTax)
{
countyTax = monthlySales * COUNTY_SALES_TAX;
}//end calculateCountySalesTax

void calculateStateSalesTax(double &monthlySales, double &stateTax)
{
stateTax = monthlySales * STATE_SALES_TAX_RATE;
}//end calculateStateSalesTax