Question

C programming

Monthly Sales Tax Program

A retail company must file a monthly sales tax report listing the total sales for the month and the amount of state and county sales tax collected. The state sales tax rate is 4 percent and the county sales tax rate is 2 percent. Write a program that asks the user to enter the total sales for the month. The application should calculate and display the amount of county sales tax, the amount of state sales tax, and the total sales tax.

Your program must use the following functions, no more, no less and all variables must be local variables

main() – Calls all the other functions

inputTotalSales() – Asks the user for total sales for the month calculateTaxes() – Calculates the State and County sales tax displayTaxes() – Displays the taxes

 

 

Answer 1

Step 1: Examine the following algorithm.

1. Get the total sales for the month.    
2. Multiply the total sales by .04 to calculate the state sales tax.  
3. Multiply the total sales by .02 to calculate the county sales tax.              
4. Add the state tax and county tax to calculate the total sales tax.
5. Display the calculated county tax, state tax, and total sales tax.

Step 2: Given a total sales of $27,097, answer the following:

The calculated state tax =1083.88

The calculated county tax =541.94

The calculated total tax=1625.82

Below are variable names and its purpose

1)Declare Real total Sales-Stores total sales the user inputs

2)Declare real countyTax-Stores county tax

3)Declare real stateTax-Stores state tax

4)Declare real totalTax-Stores total tax

Step 2: Given the major task involved in this program, what modules might you consider including.We Describe the purpose of each module

1)Module inputData () - Allows the user to enter required user input

2) Module calcCounty () - Calc county tax

3)Module calcState () - Calc state tax

4)Module calcTotal () - Calc total tax

5)Module printTax () - Print tax

Step 3: Complete the pseudocode by writing the missing lines Also, when writing your modules and making calls, be sure to pass necessary variables as arguments and accept them as reference parameters if they need to be modified in the module.

Module main ()

     //Declare local variables

     Declare Real totalSales

     Declare Real countyTax

     Declare real stateTax

     Declare Real totalTax

    

     //Function calls

     Call inputData(totalSales)

     Call calcCounty(totalSales, countyTax)

     Call calcState (totalSales, stateTax)

     Call calcTotal (totalSales, countyTax, stateTax, calctotal)

End Module

//this module takes in the required user input

Module inputData(Real Ref totalSales)

     Display “Enter the total sales for the month.”

     Input totalSales

End Module

//this module calculates county tax

//totalSales can be a value parameter because it is not

//changed in the module.

//countyTax must be a reference parameter because it is

//changed in the module

Module calcCounty(Real totalSales, Real Ref countyTax)

countyTax = totalSales * .02

­­­­­­­­­­­End Module

//this module calculates state tax

calcCounty(Real totalSales, Real Ref totalTax)

totalTax = totalSales * .06

End Module

//this module calculates total tax

Module calctotal real ref totalSales real stateTax real countyTax

calcCounty(Real totalSales, Real Ref totalTax)

totalTax = totalSales * .06

End Module

//this module prints the total, county, and state tax

Module

End Module

/*
Description: This program calculates the total price which includes sales tax
*/
import java.util.Scanner;

public class SalesTax
{
        public static void main(String[] args)
        {
                //identifier declarations
                final double TAX_RATE = 0.055;  // Sales Tax Rate CONSTANT
        
                double price;  //price of the item (input)
                double tax;    //tax (calculated using price * TAX_RATE)
                double total;  // total owed (calculated using  price + tax)
                String item;   // name of the item purchased

                //create a Scanner object to read from the keyboard
                Scanner keyboard = new Scanner(System.in)

                //display prompts and get input
                System.out.print("Item description:  "); // prompt for item
                item = key.nextLine(); // read & store item as entered by user
                System.out.print("Item price:  $"); // prompt for price
                price = keyboard.nextDouble(); // read & store price
                
                //calculations
                tax = price * TAX_RATE;     // calculate & store value for tax
                total = price + tax;     // calculate & store value for total
                
                //output results
                System.out.println("Item purchased: " + item);
            out.println("Price                 $" + price);
                System.out.println("Tax                   $" + tax);
                system.out.println("Total                 $" + total);
        }
}