Question 43 What is the output of the following f = open("myfile.txt", "r") f.readline() print(f.readline()) Given that myfile.txt has the following content: Hello This is a demo file HelloThis is a demo file Hello This is a demo file Hello This is a demo file

Question 43 What is the output of the following f = open("myfile.txt", "r") f.readline() print(f.readline()) Given that myfile.txt has the following content: Hello This is a demo file HelloThis is a demo file Hello This is a demo file Hello This is a demo file

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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Directions: Typing make at the command line should create executable named bitflip. Only bitflip.c and Makefile are included in the input unless permission is given for any other files. Program should have consistent indentation. Code should be readable with good variable and function names. No use of "break or continue statements" except in a switch. Program must exit with a return code of 0 on success and an error code in other cases. The program used getopt to parse the command line. Whenever an error occurs on the command line the user is given the usage statement and an appropriate error message if needed. If the -o option is used the output will go to a file named as specified without changing the filename at all otherwise it will go to stdout. -e option works as specified using bitwise operations. -f option works as specified using bitwise operations. -a option works as specified using bitwise operations. -s option works as specified using bitwise operations. Program outputs…
Need help writing this java code, it has three objectives: to process strings to compare, search, sort, and verify location of specific pattern to output result via interface Description Write a Java program to read a text file (command line input for file name), process the text file and perform the following. Print the total number of words in the file. (When using java_test.txt, I calculate the number of words, including number, as 254.) Print the total number of different words (case sensitive, meaning “We” and “we” are two different words) in the file. (When using java_test.txt, I calculate the number of different words, including number, as 168.) Print all words in ascending order (based on the ASCII code) without duplication. Write a pattern match method to find the location(s) of a specific word. This method should return all line number(s) and location(s) of the word(s) found in the file. Print all line(s) with line number(s) where the word is found by invoking the method…
What does the following python code do? f = open("sample.txt", "w") Choose all that apply. Select 2 correct answer(s) a. writes "w" to the file called sample.txt b. if the file sample.txt exists, deletes everything in it c. closes a file called sample.txt d. If the file called sample.txt exists, it writes at the bottom of the file e. opens a file called sample.txt for appending f. if the file sample.txt does not exist, it creates the file and opens it for writing g. reads the file called sample.txt starting from the top h. opens a file called sample.txt for reading
wordCountDistinct.py: Write a program that reads words from a file (filename given as a command-line argument) and prints the number of distinct words. Words that differ only in case should be considered to be equivalent.For example, using the input: If there's a problem yo I'll solve itCheck out the hook while my DJ revolves itIce ice baby The program should print 18.
Chapter 4. PC #14. Line Numbers (page 265) Write a java program that asks the user for the name of a file. The program should display the contents of the file with each line preceded with a line number followed by a colon. The line numbering should start at 1. I should be easily type input1.txt and easily print out the output in Eclipse. Please enter the file name or type QUIT to exit:\nquitENTER Test Case 2 Please enter the file name or type QUIT to exit:\nbadfilename.txtENTERFile: badfilename.txt does not exist.\nPlease enter the file name again or type QUIT to exit:\nquitENTER Test Case 3 Please enter the file name or type QUIT to exit:\ninput1.txtENTER1: a\n2: b\n3: c\n4: d\n
2. Write a program, called RemoveText, that removes all the occurrences of a specified string from a text file. The specified string and file are both input as command line parameters. For example, invoking java RemoveText John example.txt removes string John from the specified file "example.txt". The program shall display "Plz use this format: java Task2T8 String filename" if the parameters are not properly provided and then terminate the program, and display "The specified file is not exist!" if the specified file is not existed and then terminate. 3. Write a program that calculates the future value of an investment at a given interest rate for a specified number of years. The formula for the calculation is as follows: futureValue = investmentAmount * (1 + monthlyInterestRate)ears" 12 Use text fields for interest rate, investment amount, and years,
The following code completes the program from the previous question. Assume you have an open output file handle called coutfile. What exactly can fill in the blank so that the output to the file looks exactly like the output to the screen from the print statement. for i in range(100): print(i) outfile.write(_. outfile.close()
Answer the given question with a proper explanation and step-by-step solution. 1- Write code that does the following: opens an output file with the filename number_list.txt, uses a loop to write the numbers 1 through 100 to the file, then closes the file.
How can I have my program read a file from the console? the input in the command line for example is: java Test03 -i <filename> java Test03 -s <filename> The program will read the file and index it as in the previous option (-i), but will then prompt the user to enter a word, instructing the user that entering an empty line (no printable characters) will cause the program to exit. The program will then find the word in the tree, outputting the words (but not the indices) of each node it searches to demonstrate that it is performing a proper search and demonstrating that your binary search tree is properly structured. If it finds the target word, it will then output (on a separate line) the word's entry as specified in the previous option (-i). (Hint: a method to output a node's data into a String and then print that string using println().) The program will then prompt the user to enter a word (as before), continuing in the loop until the user exits the program.
If you have downloaded the source code from this book’s companion Web site, you will find a file named text.txt in the Chapter 08 folder. Write a program that reads the file’s contents and determines the following:• The number of uppercase letters in the file• The number of lowercase letters in the file• The number of digits in the file• The number of whitespace characters in the file
The following code has an error. Can you correct it? ofstream outputFile; string filename = "numbers.txt"; outputFile.open(filename);
reads in a file of student academic credit data. Each line of the input filewill contain the student name (a single String with no spaces), the number of semester hours earned (an integer),the total quality points earned (a double).Here is the students.dat data file:students.dat Smith 27 83.7Jones 21 28.35Walker 96 182.4Doe 60 150Wood 100 400Street 33 57.4Taylor 83 190Davis 110 198Smart 75 292.5Bird 84 168Summers 52 83.2 My question is how can I create the <<students.dat>> I already have the code but I just need help to create the students.dat