Help with execution

[FBHSIE]

The final product is pretty big when I run it. I think something is wrong. Any help?

 //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 

[chicofeo]

I would change your function prototypes from:

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

To:

//The monthly Sales should not change after the user determines the value.
void calculateCountySalesTax(double &countyTax, const double monthySales);
void calculateStateSalesTax(const double monthlySales, double &stateTax);

The final product is pretty big when I run it.

What do you mean by it? What values do you input and what is the output?

I am not able to compile your code (work computer disable the ability for it), but I use a scratch of paper to practice the following value:

monthlySales = 40;
countyTax = 40 + 4 = 44
stateTax = 40 * 0.2 = 8
totalSalesTax = 52 

My calculations were wrong. Disregard it

[FBHSIE]

http://prntscr.com/bg3p48

Here you go. : )

The values seem weird. Are they correct? If not, what did I do wrong?

Also, if I changed that to const double monthlySales what else would I have to change in my code?

[chicofeo]

Based on your code on how to determine the taxes My calculation with a scratch paper are as follows:

monthlySales = 125;

countyTax = monthlySales + COUNTY_SALES_TAX;
countyTax = 125 + .2 = 125.2

stateTax = monthlySales * STATE_SALES_TAX_RATE;
stateTax = 125 * 4 = 500

totalSalesTax = stateTax + countyTax;
totalSalesTax = 500 + 125.2 = 625.2 

It matches with your program.

Also, if I changed that to const double monthlySales what else would I have to change in my code?

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

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

[FBHSIE]

I already submitted it. Will the fact it's not a const affect anything?

[chicofeo]

For this small program. It should be fine. It is more about building the habit so when you begin to start writing larger programs.

[FBHSIE]

Thanks for the advice!