Concept explainers
Pizza Pi
Joe’s Pizza Palace needs a
A) Ask the user for the diameter of the pizza in inches.
B) Calculate the number of slices that may be taken from a pizza of that size.
A) Display a message telling the number of slices.
To calculate the number of slices that may be taken from the pizza, you must know the following facts:
• Each slice should have an area of 14.125 inches.
• To calculate the number of slices, simply divide the area of the pizza by 14.125.
• The area of the pizza is calculated with this formula:
Area = πr2
NOTE: π is the Greek letter pi. 3.14159 can be used as its value. The variable r is the radius of the pizza. Divide the diameter by 2 to get the radius.
Make sure the output of the program displays the number of slices in fixed-point notation, rounded to one decimal place of precision. Use a named constant for pi.
Want to see the full answer?
Check out a sample textbook solutionChapter 3 Solutions
MyLab Programming with Pearson eText -- Access Card -- for Starting Out with C++ from Control Structures to Objects (My Programming Lab)
Additional Engineering Textbook Solutions
Starting Out with Programming Logic and Design (5th Edition) (What's New in Computer Science)
Database Concepts (7th Edition)
Starting Out With Visual Basic (8th Edition)
Java: An Introduction to Problem Solving and Programming (8th Edition)
Concepts of Programming Languages (11th Edition)
Absolute Java (6th Edition)
- Assuming there are no deposits other than the original investment, the balance in a saving account after one year may be calculated as Amount=Principal * (1+ Rate / T)T principal -balance in the saving account, Rate -the interest rate, T - number of times the interest is compounded during a year. Write a program that asks for : the principal, the interest rate, and the number of times the interest is compounded. It should display a report similar to Interest Rate: 4.25% Times Compounded: 12 Principal: $ 1000.00 Interest: $ 43.34 Amount in Savings: $ 1043.34arrow_forwardsoftware sales a software company sells a package that retails for $99. quantity discounts are given according to the following table: quantity discount 10-19 10% 20-49 20% 50-99 30% 100 or more 40% write a program that asks the user to enter the number of packages purchased. the program should then display the amount of the discount (if any) and the total amount of the purchase after the discount.arrow_forwardLULU Shopping wants to calculate the Commission given their employee. The program should ask the user to the number of items, and the unit amount. The sales bill is computed by multiplying the number of items and the unit amount A commission is computed based on the Sales as shown in the table below: sales bill commission 1 – 150 10% of the sales bill More than 150 18% of the sales bill Display the Sales bill and the commission. (Python)arrow_forward
- Widgets and Gizmos An online retailer sells two products: widgets and gizmos. Each widget weighs 75 grams. Each gizmo weighs 112 grams. Write a program that reads the number of widgets and the number of gizmos in an order from the user. Then your program should compute and display the total weight of the order.arrow_forwardFat Gram Calculator Design a program that asks for the number of fat grams and calories in a food item. Validate the input as follows: Make sure the number of fat grams and calories is not less than 0. According to nutritional formulas, the number of calories cannot exceed fat grams x 9. Make sure that the number of calories entered is not greater than fat grams x 9. Once corrected data has been entered, the program should calculate and display the percentage of calories that come from fat. Use the following formula: Percentage of calories from fat = (Fat grams x 9) / calories ANSWER IN PSEUDOCODE USE ONLY WHILE LOOPS DO NOT USE MODULES/FUNCTIONSarrow_forwardFat Gram Calculator Design a program that asks for the number of fat grams and calories in a food item. Validate the input as follows: Make sure the number of fat grams and calories is not less than 0. According to nutritional formulas, the number of calories cannot exceed fat grams x 9. Make sure that the number of calories entered is not greater than fat grams x 9. Once corrected data has been entered, the program should calculate and display the percentage of calories that come from fat. Use the following formula: Percentage of calories from fat = (Fat grams x 9) / calories ANSWER IN PSEUDOCODEarrow_forward
- True or False In code, true and false must be lowercase.arrow_forward(Geometry: distance of two points) Write a program that prompts the user to enter two points (x1, y1) and (x2, y2) and displays their distance between them. The formula for computing the distance is: Square root of ((x2 - x1) squared + (y2 - y1) squared) Note that you can use pow(a, 0.5) to compute square root of a. Sample Run Enter x1 and y1: 1.5 -3.4 Enter x2 and y2: 4 5 The distance between the two points is 8.764131445842194arrow_forwardFinancial application: calculate tips) Write a program that reads the subtotal and the gratuity rate, then computes the gratuity and total. For example, if the user enters 10 for subtotal and 15% for gratuity rate, the program displays $1.5 as gratuity and $11.5 as total. please take screenshots of the stops.arrow_forward
- Summary During each summer, John and Jessica grow vegetables in their backyard and buy seeds and fertilizer from a local nursery. The nursery carries different types of vegetable fertilizers in various bag sizes. When buying a particular fertilizer, they want to know the price of the fertilizer per pound and the cost of fertilizing per square foot. Instructions The following program prompts the user to enter the size of the fertilizer bag, in pounds, the cost of the bag, and the area, in square feet, that can be covered by the bag. The program should output the desired result. However, the program contains logic errors. Find and correct the logic errors so that the program works properly. //Logic errors.#include <iostream>#include <iomanip> using namespace std; int main(){ double cost; double area; double bagSize; cout << fixed << showpoint << setprecision(2); cout << "Enter the amount of fertilizer, in pounds, " <<…arrow_forwardSummary During each summer, John and Jessica grow vegetables in their backyard and buy seeds and fertilizer from a local nursery. The nursery carries different types of vegetable fertilizers in various bag sizes. When buying a particular fertilizer, they want to know the price of the fertilizer per pound and the cost of fertilizing per square foot. Instructions The following program prompts the user to enter the size of the fertilizer bag, in pounds, the cost of the bag, and the area, in square feet, that can be covered by the bag. The program should output the desired result. However, the program contains logic errors. Find and correct the logic errors so that the program works properly. //Logic errors.#include <iostream>#include <iomanip> using namespace std; int main(){ double cost; double area; double bagSize; cout << fixed << showpoint << setprecision(2); cout << "Enter the amount of fertilizer, in pounds, " <<…arrow_forwardMiles per Gallon A car holds 15 gallons of gasoline and can travel 375 miles before refueling. Write a program that calculates the number of miles per gallon (MPG) the car gets. Display the result on the screen.arrow_forward
- C++ Programming: From Problem Analysis to Program...Computer ScienceISBN:9781337102087Author:D. S. MalikPublisher:Cengage Learning