Lowest and Highest Gas Prices
Assume that you have a file that contains the weekly average prices for a gallon of gas in the United States for the past 3 years. The data is stored in the file as records. Each record contains the average price of a gallon of gas on a specific date. Each record contains the following fields:
- The month, stored as an integer. January= 1, February= 2, etc.
- The day of the month, stored as an integer.
- The year, stored as an integer.
- The average price of a gallon of gas on the specified date, stored as a real number, rounded to 3 decimal places.
Design a
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- In this exercise, you modify the Grade Calculator application from this chapter’s Apply lesson. Use Windows to make a copy of the Grade Solution folder. Rename the copy Grade Solution-Intermediate. Open the Grade Solution.sln file contained in the Grade Solution-Intermediate folder. Open the CourseGrade.vb file. The DetermineGrade method should accept an integer that represents the total number of points that can be earned in the course. (Currently, the total number of points is 200: 100 points per test.) For an A grade, the student must earn at least 90% of the total points. For a B, C, and D grade, the student must earn at least 80%, 70%, and 60%, respectively. If the student earns less than 60% of the total points, the grade is F. Make the appropriate modifications to the DetermineGrade method and then save the solution. Unlock the controls on the form. Add a label control and a text box to the form. Change the label control’s Text property to “&Maximum points:” (without the quotation marks). Change the text box’s name to txtMax. Lock the controls and then reset the tab order. Open the form’s Code Editor window. The txtMax control should accept only numbers and the Backspace key. Code the appropriate procedure. The grade should be cleared when the user makes a change to the contents of the txtMax control. Code the appropriate procedure. Modify the frmMain_Load procedure so that each list box displays numbers from 0 through 200. Locate the btnDisplay_Click procedure. If the txtMax control does not contain a value, display an appropriate message. The maximum number allowed in the txtMax control should be 400; if the control contains a number that is more than 400, display an appropriate message. The statement that calculates the grade should pass the maximum number of points to the studentGrade object’s DetermineGrade method. Make the necessary modifications to the procedure. Save the solution and then start and test the application.arrow_forwardC++HurdleWords The HurdleWords class is mostly provided to you. HurdleWords is constructed from two files in the data/ folder: ● valid_guesses.txt (all 5 letter guesses considered to be valid words to guess), and ● valid_hurdles.txt (all words that may be selected to be the secret Hurdle.) ● Note: you may edit both text files if you’d like to add custom words to your game. HurdleWords stores all potential valid Hurdles from valid_hurdles.txt into a vector of strings (valid_hurdles_), and all valid guesses from valid_guesses.txt into an unordered set of strings (valid_guesses_). A set is simply a data structure that contains no duplicates and allows for a speedy lookup to check if a given element exists within the set. Because there are over 10,000 valid guesses, we store them in an unordered set to leverage their speediness, as you will need to check if a user-submitted guess is considered valid (i.e. their guess is considered a valid guess in the dictionary). You are responsible for…arrow_forwardFleet class: Instance Variables An array that stores Aircraft that represents Delta Airlines entire fleet A variable that represents the count for the number of aircraft in the fleet Methods: o Constructor-One constructor that instantiates the array and sets the count to aero readFile()-This method accepts a string that represents the name of the file to be read. It will then read the file. Once the data is read, it should create an aircraft and then pass the vehicle to the addAircraft method. It should not allow any duplication of records. Be sure to handle all exceptions. o writeFile()-This method accepts a string that represents the name of the file to be written to and then writes the contents of the array to a file. This method should call a sort method to sort the amay before writing to it. sortArray()-This method returns a sorted array. The array is sorted by registration number.u addAircraft- This method accepts an aircraft and adds it to the fleet(the array only if it is not…arrow_forward
- A computer store uses a database to track inventory. The database has a table named Inventory, with the following columns: ProductID INTEGER PRIMARY KEY NOT NULL ProductName TEXT QtyOnHand INTEGER Cost REAL Also assume that the cur variable references a Cursor object for the database. Write Python code that does the following: Executes a SELECT statement to return all the columns from the rows where Cost is less than 999.99. Assigns all the results of the SELECT statement to a variable named results.arrow_forwardCargo Container Report. You will be producing a program which will allow the user to generate the container report on the following page in Container Number order or Ship Name order. The program will also the user to lookup the data for any given Container by number. The % cargo weight is the percentage of the cargo of the gross weight (cargo weight/gross weight), % total is the percentage of the cargo for that container of the total amount of cargo unloaded (cargo weight for the container / total cargo unloaded. Hint: you are expected to use methods for your calculations. The accompanying file has the data for the containers unloaded today. The data includes container number int ship name. String tare weight of the container (empty weight) int the gross weight (container plus the cargo). Int You will need to computer the cargo weight as the gross weight minus the tare weight. If you have issues reading the data with the String, you may remove the String. However, you will lose points.…arrow_forwardBAGGINS Trucking maintains a trip file in which each record contains the following data:DRIVER nameMILES driven on tripHOURS driven on trip Design an application that inputs records from the file (until reaching "eof") and, for each record, displays the DRIVER's name and the average Miles-per-Hours (MPH) for the trip where MPH is calculated by dividing the MILES by the HOURS. The program should also accumulate a GRAND total of the MILES driven. At the end, the program should display the GRAND total of the MILES driven. For example, if the trip file contained the following:Smith, 300, 5Williams, 750, 10Jones, 880, 11 then the program should display:Smith averaged 60 mphWilliams averaged 75 mphJones averaged 80 mphGrand total of miles is 1,930 Pseudocode:arrow_forward
- YCapture Pr Microsoft Visual C# 7th edition. In Chapter 7, you modified the GreenvilleRevenue program to include a number of methods. Now, using your code from Chapter 7 Case Study 1, modify your program so every data entry statement uses a TryParse() method to ensure that each piece of data is the correct type. Any invalid user entries should generate an appropriate message that contains the word Invalid, and the user should be required to reenter the data. Cengage requirement for the shaded part is attached andI don't understand it. I need help with the highlighted part (getContestantData() method) please. Thanksarrow_forward1. Creating Employee Data ( Page 625)Create an application that allows the user to enter the following employee data: First Name, Middle Name, Last Name, Employee Number, Department, Telephone Number, Telephone Extension, and E-mail Address. The valid values for department are Accounting, Administration, Marketing, MIS, and Sales. Once the data is entered, the user should be able to save it to a file. Figure 9-30 shows an example of the application’s form. The form shown in Figure 9-30 has a combo box for selecting the department; a Save Record button, which writes the record to a file; a Clear button, which clears the text boxes; and an Exit button. Write code in the Form_Load event handler that allows the user to enter the name of the file. If the file does not exist, a new one will be created. If the file already exists, the input data will be appended to the file. ******** Make sure to test your project by entering a new text file name, and then to confirm you are appending data to…arrow_forwardInvalidDateException An event management company needs to keep track of all the events they organize in the year 2017. They have the dates in which all the events that had happened in the whole year. You are the technical head of the company write a program to check whether the entered date is valid and find the count of events for each quarter for the year 2017. The program asks for dates as input. If the date is not valid it prints an error message.Strictly adhere to the Object-Oriented specifications given in the problem statement. All class names, member variable names, and function names should be the same as specified in the problem statement. The class named InvalidDateException inherits the exception class and includes a member function that returns the following message "InvalidDateException: Please enter the date again". In the Main method, obtain the number of events from the user in the console. Get the date for each event. If the date is invalid, throw…arrow_forward
- Problem Charge Account Validation Create an application that reads the contents of the file into an array or a List . The application should then let the user enter a charge account number. The program should determine whether the number is valid by searching for it in the array or List that contains the valid charge account numbers. If the number is in the array or List , the program should display a message indicating the number is valid. If the number is not in the array or List , the program should display a message indicating the number is invalid. For Visual Studio .Net 4.6.1 current solution on bartleby does not work as it does not actually use a list and does not properly retrieve the file file is a text document with 18 7 digit numbers named ChargeAccounts.txtarrow_forwardEmployee view attendance report The employee must be logged in to the system to perform this function. The employee selects the report period (range of dates: from - to). The employee selects "show report". Range of dates for the report must be maximum 3 months, so if the range is invalid, the system displays an error message. The system displays every working day in the report with the status of the employee in this day, which could be one of the following: on time, late, did not come. One actor? One use case name? One class ? Attributes for the class ? One relation between classes ?arrow_forwardQuestion 10 The default data type for a sequence object is Decimal Char Ob. Varchar C. Int d.arrow_forward
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