A programmer notices that the following code snippet uses the same algorithm forcomputing cost after taxes, but with different variables, in the two places as shownbelow, and in several other places in the program. What could be done to improvethe program?final double TAXRATE1 =final double TAXRATE2 = 5.5;double subtotal = price (1 + TAXRATE1) / 100;10;double total= subtotal + shipping *(1 + TAXRATE2) / 100;Declare the tax rates as variables, not constants.Define a method that looks up tax rates for goods and shipping charges.Define a method that computes the cost after taxes from arguments for the costbefore taxes and the tax rate.Define a method that prompts the user for an amount and a tax rate, thenreturns the total amount including the tax.

ANSWER:Define a function that computes the interest earned from an amount and a rate of interest.

Answered: A programmer notices that the following…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Write an improved version of the futval . py program from Chapter 2.Your program will prompt the user for the amount of the investment, theannualized interest rate, and the number of years of the investment. Theprogram will then output a nicely formatted table that tracks the value ofthe investment year by year. Your output might look something like this: Year Value----------------0 $2000 . 001 $2200 . 002 $2420 . 003 $2662 . 004 $2928 . 205 $3221 . 026 $3542 . 127 $3897 . 43
3) Suppose an airline company has hired you to write a program for choosing the passengers who should leave an overbooked flight. That means the airline has booked too many passengers hoping some of them would not show up on time, but passengers are on board and the aircraft doesn't have enough seats available for all these passengers. Your program chooses the passenger who must leave the flight. Passengers will be ranked based on the fare they have paid for booking (a double number called fare), and their number of loyalty points (an integer number called points). Fare and points are equally important, that means, in order to decide the position of each passenger in the list, fare and points each have 50% importance. A Person with minimum priority (combination of fare and points) will leave the flight. You need to define a class called Passenger with these member variables: passenger's name • fare points. Passenger class must have 3 accessors, 3 mutators, a constructor with three…
Modify the above program to compute the side area, total area, and volume of a cylinder and the area and volume of a sphere, depending on the choice that the user makes. Your program should ask users to enter 1 to choose cylinder or 2 for sphere, and display an "invalid choice error" for other values. For a cylinder, we want to compute: Side area: (2*PI*r) * h Total Area: 2*(PI*r2) + Side area Volume: (PI*r2)*h For a sphere, we want to compute: Surface area: 4*PI*r2 Volume: (4.0/3.0)*PI*r3. Use overloading whenever possible. Provide comments for any functions that are overloaded and explain why they could be overloaded the program should be written in c++
Let's modify the program from this section so that the user can supply the interest rate. For very small interest rates, it may take a very long time for the balance to double. Assume the user can't wait for more than twenty years. Stop adding interest when the balance has doubled or twenty years have elapsed. 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 finaldoubleTARGET=2*INITIAL_BALANCE; doublebalance=INITIAL_BALANCE; intyear=0; Scannerin=newScanner(System.in); System.out.print("Interest rate in percent: "); doublerate=in.nextDouble(); // TODO: Count the years required for the investment to double // but no more than 20 years /* Your code goes here */ System.out.println("Year: "+year); System.out.printf("Balance: %.2f%n", balance); }
Modify the above program to compute the side area, total area, and volume of a cylinder and the area and volume of a sphere, depending on the choice that the user makes. Your program should ask users to enter 1 to choose cylinder or 2 for sphere, and display an "invalid choice error" for other values. For a cylinder, we want to compute: Side area: (2*PI*r) * h Total Area: 2*(PI*r2) + Side area Volume: (PI*r2)*h For a sphere, we want to compute: Surface area: 4*PI*r2 Volume: (4.0/3.0)*PI*r3. Use overloading whenever possible. Provide comments for any functions that are overloaded and explain why they could be overloaded
in C# Sometimes figuring letter grades is hard. Write a program that asks for, and reads from the user, a midterm exam grade and a final exam grade. Compute the average of those two grades and ouput a letter grade based on the scale shown below. CHALLENGE PROBLEM: One of my graduate school classes modified the above calculation. This professor said that the final grade would be determined by the simple average of the midterm and the final, however, if the student scored better on the final than they did on the midterm, the professor would weight the midterm exam at 25%, and the final exam at 75% when computing the final grade. Modify your code to use this professors modification in determining letter grade. Here is the grading scale:
A supermarket is doing a sales promotion for soft drinks. If one day you buy soft drinks and bring the empty bottles the next day, they exchange each set of K empty bottles for a full one. A customer wants to make the most of this offer and therefore bought several bottles on the first day of the promotion. Now he wants to know how many bottles he will have at the end of the second day of the promotion if he use it to the fullest. Make a program to calculate this. Input The first input line contains integer T (1 ≤ T ≤ 10000), which indicates the number of test cases. In each of the following T lines come two integers N and K (1 ≤ K, N ≤ 10000), respectively the number of soft drinks bought and the number of empty bottles to gain a full. Output For each test case print the number of bottles that the customer will have on the second day, if he makes the most of the offer.
this is a problem that I have how would I go about solving it? Stadium Seating There are three seating categories for a BC softball game. Class A seats cost $15, Class B seats cost $12, and Class C seats cost $9. Write a program that asks how many tickets for each class of seats were sold. Then display the total number of tickets sold, the amount of income generated from each class and the total ticket sales. Note: Use constants for the seat prices. Sample output: WELCOME TO THE BROWARD COLLEGE STADIUM!! Please enter the number of Class A seats sold: 100 Please enter the number of Class B seats sold: 200 Please enter the number of Class C seats sold: 150 ************************************************** Total number of tickets sold: 450 Income Generated: Class A:$1500.00 Class B: $2400.00 Class C: $1350.00 Total: $5250.00
Write a program in C language to simulate tossing a “fair” coin. Allow the user to enter the number of tosses.Print the number of tosses that yield heads and the number of tosses that yield tails.What should be the percentage distribution of heads and tails? (Use the function rand_int)
The body mass index, BMI, is a measure used to determine if a person is overweight or not. We can calculate BMI from the weight of the person (in pounds) and the height (in inches) of the person.The formula for calculating BMI is:BMI = (weightInPounds * 703) divided by (heightInInches squared)In this problem, you will develop a Java program as a BMI calculator, that reads the user’s weight in pounds and height in inches, then calculates and displays the user’s body mass index BMI. Also, display the following information {from the US Department of Health} so the user can evaluate his/her BMI:BMI values:Underweight: less than 18.5Normal: between 18.5 and 24.9Overweight: between 25 and 29.9Obese: 30 or greater
Write a program that simulates the rolling of two dice. The program should use rand to roll the first dice and should use rand again to roll the second dice. The sum of the two values should then be calculated. Note: Since each dice can show an integer value from 1 to 6, then the sum of the to values will vary from 2 to 12, with 7 being the most frequent sum and 2 and 12 being the least frequent sums. Below shows the 36 possible combinations of the two dice. Your program should roll the two dice 36,000 times. Use a single-subscripted array to tally the numbers of times each possible sum appears. Print the results in a tabular format. Also, determine if the totals reasonable (i.e. there are six ways to roll a 7, so approximately one sixth of all the rolls should be 7).
In python, a) In the Hi-Lo game, the player begins with a score of 1000. The player is prompted for the number of points to risk and a second prompt asks the player to choose either High or Low. The player’s choice of either High or Low is compared to a random number between 1 and 13, inclusive. If the number is between 1 and 6 inclusive, then it is considered “low”. A number between 8 and 13 inclusive is “high”. The number 7 is neither high nor low, and the player loses the points at risk. If the player had guessed correctly, the points at risk are doubled and added to the total points. For a wrong choice, the player loses the points at risk. Create a HiLo application based on this specification. Application output should look similar to b) Modify the application to allow the player to continue until there are 0 points left. At the end of the game, display the number of guesses the user took before running out of points.

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