Question

Mountain Coffee wants a program that allows a clerk to enter the number of pounds of coffee ordered, the price per pound, and whether the customer should be charged a 3.5% sales tax. The program should calculate and display the total amount the customer owes. Use an int variable for the number of pounds, a double variable for the price per pound, and a char variable for the sales tax information.

a. Create an IPO chart for the problem, and then desk-check the algorithm twice. For the first desk-check, use 5 as the number of pounds and 13.69 as the price per pound; the customer should be charged the sales tax. For the second desk-check, use 3 as the number of pounds and 11.59 as the price per pound; the customer should not be charged the sales tax.

b. List the input, processing, and output items, as well as the algorithm, in a chart similar to the one shown earlier in Figure 5-27. Then code the algorithm into a program.

c. Desk-check the program using the same data used to desk-check the algorithm.

d. If necessary, create a new project named Introductory11 Project, and save it in the Cpp8\Chap05 folder. Enter your C++ instructions into a source file named Introductory11.cpp. Also enter appropriate comments and any additional instructions required by the compiler. Display the total amount owed in fixed-point notation with two decimal places. Test the program using the same data used to desk-check the program.

Answer 1

Copyable code:
File Name: Introductory11.cpp
//Include the needed files
#include <iostream>
#include <string>
#include <iomanip>
#include <cstdlib>
//Use the namespace std
using namespace std;
//main
int main()
{
//Declare nPounds
int nPounds=0;
//Declare priceAmount
double priceAmount=0;
//Declare taxInfo
char taxInfo = 'n';
//Declare tempAmount
double tempAmount =0;
//Declare taxAmount
double taxAmount =0;
//Declare totAmount
double totAmount =0;
//Prompt
cout<<"Enter the number of pounds:";
//Read nPounds
cin>>nPounds;
//Prompt
cout<<"Enter the price:";
//Read priceAmount
cin>>priceAmount;
//Prompt
cout<<"Is tax chargeable (y/n)?";
//Read taxInfo
cin>>taxInfo;
//Check condition
if(taxInfo =='y')
{
//Find tempAmount
tempAmount = nPounds * priceAmount;
//Find taxAmount
taxAmount = tempAmount * 0.035;
//Find totAmount
totAmount = tempAmount + taxAmount;
}
//Else
else
{
//Find totAmount
totAmount = nPounds * priceAmount;
}
//Display totAmount
cout<<"Total Amount:"<<fixed<<setprecision(2)<<totAmount<<endl;
//Pause window
system("pause");
//Stop
return 0;
}