Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Question
Please help write the functions (context for the problem in the images):
write_X_to_map(filename, row, col): Takes as inputs a string corresponding to a filename, and two non-negative integers representing a row and column index. Reads in the map at the given filename, inserts an X into the given row and column position, then saves the map to a new file with 'new_' prepended to the given filename. You can assume the filename given to the function as argument refers to a file that exists.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by stepSolved in 3 steps with 2 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- >> classicVinyls.cpp For the following program, you will use the text file called “vinyls.txt” attached to this assignment. The file stores information about a collection of classic vinyls. The records in the file are like the ones on the following sample: Led_Zeppelin Led_Zeppelin 1969 1000.00 The_Prettiest_Star David_Bowie 1973 2000.00 Speedway Elvis_Presley 1968 5000.00 Spirit_in_the_Night Bruce_Springsteen 1973 5000.00 … Write a declaration for a structure named vinylRec that is to be used to store the records for the classic collection system. The fields in the record should include a title (string), an artist (string), the yearReleased (int), and an estimatedPrice(double). Create the following…arrow_forward13. Write function quote() that takes as input the name of a file (as a string) and anindex i (as an integer). The file will contain quotes, one per line. The function shouldopen the file, read the file, close the file, and return the i-th quote (i.e. the i-th line in thefile), assuming that the quote numbering starts at 0. Test your solution onfile Wilde_Quotes.txt.>>> quote("Wilde_Quotes.txt", 5)'At twilight, nature is not without loveliness, thoughperhaps its chief use is to illustrate quotations from thepoets.\n'>>> quote("Wilde_Quotes.txt", 0)'A little sincerity is a dangerous thing, and a great dealof it is absolutely fatal.\n'>>> quote("Wilde_Quotes.txt", 23)'Patriotism is the virtue of the vicious. \n'>>>arrow_forwardpython please Do not need create the file"summer.txt", just need steps.arrow_forward
- Plz solve assignment 5 by using assignment 8, use c programming and plz don't use any other libraries other than stdio . harrow_forwardJupyter Notebook Fixed Income - Certicificate of Deposit (CD) - Compound Interest Schedule An interest-at-maturity CD earns interest at a compounding frequency, and pays principal plus all earned interest at maturity. Write a function, called CompoundInterestSchedule, that creates and returns a pandas DataFrame, where each row has: time (in years, an integer starting at 1), starting balance, interest earned, and ending balance, for an investment earning compoundedinterest. Use a for(or while) loop to create this table. The equation for theith year's ending balance is given by: Ei =Bi (1+r/f)f where: Ei is year i's ending balance Bi is year i's beginning balance (note: B1 is the amount of the initial investment (principal) r is the annual rate of interest (in decimal, e.g., 5% is .05) f is the number of times the interest rate compounds (times per year) The interest earned for a given year is Ei - Bi Note the term of the investment (in years) is not in the above equation; it is used…arrow_forwardWrite the code segments based on the given descriptions: Declare a file pointer called input. Open a file called location.txt for reading using this pointer. If the file is not available, display “File does not exist.”. The content of the text file location.txt is as shown below. It includes the location, latitude and longitude values. FILE location.txt CONTENTS <Location> <Latitude> <Longitude> UTM 1.5523763 103.63322 KLCC 3.153889 101.71333 UM 3.1185 101.665 UMS 6.0367 116.1186 UNIMAS 1.465174 110.4270601 Ask the user to enter a location. Check if the user’s location can be found in the text file. If found, display the location, latitude and longitude as shown below. SAMPLE OUTPUT Enter a location: UM Location : UM Latitude : 3.1185 Longitude : 101.6650 Otherwise display “Sorry, location could not be found”. SAMPLE OUTPUT Enter a location : MMU Sorry, location could not be foundarrow_forward
- In pythonarrow_forward*Coding in Python A comma-separated value file stocks_data.csv download contains historical data on the Adjusted Closing Price for 3 stocks daily from Jan 2, 2009 to Dec 31,2018. The stocks are Apple (APPL), Microsoft (MSFT) and IBM (IBM). A snippet from the data file looks like the following: Symbol Date Adj. Close MSFT 4/16/2014 35.807358 MSFT 6/21/2010 20.752356 IBM 2/10/2009 68.930023 AAPL 2/14/2018 164.227203 IBM 6/13/2017 141.24379 IBM 12/26/2017 142.835663 MSFT 4/1/2009 15.053272 AAPL 4/17/2009 15.445643 You can see that each row has a symbol, date and closing price, but the stock data is not sorted by symbol, date or price. Your task has two main parts: Part I For each stock, print the following information to the console and to a text file called stock_summary.txt: the max price and date it occurs the min price and date it occurs the average (mean) price Part 2 Print to the console and append to the output file stock_summary.txt: The stock among the 3…arrow_forwardComputer Science Please use go language programma to write this code. Write a program that creates a CSV file to store and retrieve data such as name, age, and salary. You should be able to read the data out of the file and display the data sorted by name. Hint: Make use of the Sort package to sort the data. Make sure you check the existence of the file, closing the file when there is an error Use defer, panic, and recover as needed.arrow_forward
- Debug the following phython code. """This function reads in data from the file specified by filename. This data is read line by line and unpacked into a single variable called data. argumentsfilename - the name of the file to be read returnsdata - a list of data, each element is a list that corresponds to the set of entries separated by commas in the original file. To access the first entry use data[0]. If x = data[0], then x[0], through x[3] will correspond to entries in the file that are read in. """ def read_file(filename):fin = open(filename,'r')line = fin.readline()data = []while line:data.append(parse_line(line))line = fin.readline()return dataarrow_forwardThe average amount Sold function is not run as expect. Please fix it. The input file: sales.txt header in picture. It is over 5000 char. I can't copy. 13492785 2017 Jane North; 1000 78534520 2012 Tim South; 95020192756 2017 Linda East; 15000 19273458 2012 Paul West; 500078520192 2017 Mary Jane Doe; 5001 32278520 2012 Victor Smith; 799514278520 2012 Mary Johnson; 12056192785 2017 Tom Baker; 1300 88278529 2012 Diana Newman; 150089278527 2012 William Peterson; 1420098278528 2012 Jim Gaddis; 120099192785 2017 Laura King; 1000 43278524 2012 Ann McDonald; 2000 The output expect: in picture. #include "Sales.h"#include <iostream>#include <sstream>#include <iomanip>#include <fstream>#include <string>using namespace std; const int MAX_SIZE = 30; void readData(string fileName, Sales salesArr[], int n);double calcSalesAvg(Sales salesArr[], int n);void displayOverAvg(Sales salesArr[], int n, double avg);void writeReport(Sales salesArr[], int n, string…arrow_forwardP7arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Database System ConceptsComputer ScienceISBN:9780078022159Author:Abraham Silberschatz Professor, Henry F. Korth, S. SudarshanPublisher:McGraw-Hill EducationStarting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSONDigital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON
- C How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSONDatabase Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage LearningProgrammable Logic ControllersComputer ScienceISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
Database System Concepts
Computer Science
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:McGraw-Hill Education
Starting Out with Python (4th Edition)
Computer Science
ISBN:9780134444321
Author:Tony Gaddis
Publisher:PEARSON
Digital Fundamentals (11th Edition)
Computer Science
ISBN:9780132737968
Author:Thomas L. Floyd
Publisher:PEARSON
C How to Program (8th Edition)
Computer Science
ISBN:9780133976892
Author:Paul J. Deitel, Harvey Deitel
Publisher:PEARSON
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781337627900
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning
Programmable Logic Controllers
Computer Science
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education