quenton Consider the following piece of code that opens a file with file pointer fp, in this file student name, surname and grade is stored in each line of this file, this code aims to read each line from the file and print them on the screen while(1feof (fp)) printf (- s ts d \n", nane, surname, grade): Assume the file has already been opened with file pointer fp, and all the rest of the variables have already been declared. Choose the correct statement for missing part. a) tscanf (fp, "s ta d \n", name, surnane, grade) : b) facanf (*fp, "s d \n", aname, surnane, sgrade) e) fscant (fp," a d \n", name, surnane, 4grade): di fscanf (fp," t d \n", aname, 6aurname, sgrade)

quenton Consider the following piece of code that opens a file with file pointer fp, in this file student name, surname and grade is stored in each line of this file, this code aims to read each line from the file and print them on the screen while(1feof (fp)) printf (- s ts d \n", nane, surname, grade): Assume the file has already been opened with file pointer fp, and all the rest of the variables have already been declared. Choose the correct statement for missing part. a) tscanf (fp, "s ta d \n", name, surnane, grade) : b) facanf (*fp, "s d \n", aname, surnane, sgrade) e) fscant (fp," a d \n", name, surnane, 4grade): di fscanf (fp," t d \n", aname, 6aurname, sgrade)

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

See similar textbooks

Similar questions

The objective of this question is to generate and read files that contain a list of random numbers. Write a function that generates a file with following parameters: def fillFile(fileSize, fileName): The function should be called to generate files in the following sizes: fileSizes = [1000, 5000, 10000, 20000, 30000, 40000, 50000] The generated files can have names file1000, file 5000, file 10000, file20000, fi130000, file40000, file 50000. You can use random.randint(0.fileSize+1000) to generate a random number. Write another function that reads numbers inside of a file and returns a list. def readFile(fileName): The returned list contains the numbers stored in the file. At each call of fillFile and readFile, record the times before and after the function call as in following example (import time): start = time.time() fillFile(file Size, "file" + str(fileSize)) finish time.time() runTime = finish - start Record the run times of functions into a file named "fileStats.txt". The…
Write a function that takes (i) a FILE pointer (e.g. FILE *fp) type variable, (ii) an array of student struct (that you defined in the previous question), and (iii) the number of valid elements in that array as parameters, and write those elements in a file named "students.dat". This function should return 1 if it can successfully open this file; otherwise, it should return 0.Please use C language
EmpFromFile Implement a function readEmpFromFile that takes a FILE * as the only argument and returns a pointer to a struct employee. This function should read the information from the file (reversing what writeEmpToFile does), create a new employee and fill in the data. If the FILE has no more info (is at end of file), this function should return NULL. This function must also ensure any employee actually created (not the NULL) is added to the array (as is done in createEmployee). Change main to load employees from a file using a command called LOAD which is given to the program using (using your readEmpFromFile function you just wrote). void main(void) { int end = 1; char * command; char buff[256]; char * findEmp; char findBuff[256]; char * sortType; char sortBuff[256]; char hire[] = "HIRE"; char list[] = "LIST"; char quit[] = "QUIT"; char find[] = "FIND"; char fire[] = "FIRE"; char _sort[] = "SORT"; char salary[] =…
(a) Write a C function readNums() that takes a filename and an integer array, reads the integer numbers in the file and stores into the array, returns the number of numbers stored in the array. Assume that the file only contains integer numbers, and nothing else. Prototype: int readNums(char filename[], int arr[]); (b) Write a C function delWordN() that takes a string and an integer (n) as parameter, removes from the string the words that are n character long. A word is a group of consecutive alphanumeric characters; words are separated by non-alphanumeric characters. ps: please do not copy paste from chegg or anywhere else. write unique code
Read Data Write a function that reads in data from a file using the prototype below. The function can define and open the file, read the names and marks into the arrays and keep track of how many names there are in numElts, and then closes the file. The list of names and marks can be found at the end of the lab and copied into a text file. void getNames(string names[], int marks[], int& numElts); Display Data Write a function to display the contents of names and marks using the prototype given below. void displayData(const string names[], const int marks[], int numElts); Linear Search Write the searchList function given the prototype below so that it searches for a given name. The functions returns and int which is the index of the name found. The main program will decide if -1 is returned then it will say name is not found otherwise it will write out the name and the mark for that name. int linearSearch(const string list[], int numElts, string value);…
8.7 LAB: File name change A photographer is organizing a photo collection about the national parks in the US and would like to annotate the information about each of the photos into a separate set of files. Write a program that reads the name of a text file containing a list of photo file names. The program then reads the photo file names from the text file, replaces the "_photo.jpg" portion of the file names with "_info.txt", and outputs the modified file names. Assume the unchanged portion of the photo file names contains only letters and numbers, and the text file stores one photo file name per line. If the text file is empty, the program produces no output. Ex: If the input of the program is: ParkPhotos.txt and the contents of ParkPhotos.txt are: Acadia2003_photo.jpg AmericanSamoa1989_photo.jpg BlackCanyonoftheGunnison1983_photo.jpg CarlsbadCaverns2010_photo.jpg CraterLake1996_photo.jpg GrandCanyon1996_photo.jpg IndianaDunes1987_photo.jpg LakeClark2009_photo.jpg…
9.12 LAB: File name change PYTHON A photographer is organizing a photo collection about the national parks in the US and would like to annotate the information about each of the photos into a separate set of files. Write a program that reads the name of a text file containing a list of photo file names. The program then reads the photo file names from the text file, replaces the "_photo.jpg" portion of the file names with "_info.txt", and outputs the modified file names. Assume the unchanged portion of the photo file names contains only letters and numbers, and the text file stores one photo file name per line. If the text file is empty, the program produces no output. Ex: If the input of the program is: ParkPhotos.txt and the contents of ParkPhotos.txt are: Acadia2003_photo.jpg AmericanSamoa1989_photo.jpg BlackCanyonoftheGunnison1983_photo.jpg CarlsbadCaverns2010_photo.jpg CraterLake1996_photo.jpg GrandCanyon1996_photo.jpg IndianaDunes1987_photo.jpg LakeClark2009_photo.jpg…
12.12 LAB: File name change A photographer is organizing a photo collection about the national parks in the US and would like to annotate the information about each of the photos into a separate set of files. Write a program that reads the name of a text file containing a list of photo file names. The program then reads the photo file names from the text file, replaces the "_photo.jpg" portion of the file names with "_info.txt", and outputs the modified file names. Assume the unchanged portion of the photo file names contains only letters and numbers, and the text file stores one photo file name per line. If the text file is empty, the program produces no output. Ex: If the input of the program is:
12.12 LAB: File name change A photographer is organizing a photo collection about the national parks in the US and would like to annotate the information about each of the photos into a separate set of files. Write a program that reads the name of a text file containing a list of photo file names. The program then reads the photo file names from the text file, replaces the "_photo.jpg" portion of the file names with "_info.txt", and outputs the modified file names. Assume the unchanged portion of the photo file names contains only letters and numbers, and the text file stores one photo file name per line. If the text file is empty, the program produces no output. Ex: If the input of the program is: ParkPhotos.txt and the contents of ParkPhotos.txt are: Acadia2003_photo.jpg AmericanSamoa1989_photo.jpg BlackCanyonoftheGunnison1983_photo.jpg CarlsbadCaverns2010_photo.jpg CraterLake1996_photo.jpg GrandCanyon1996_photo.jpg IndianaDunes1987_photo.jpg LakeClark2009_photo.jpg…
Write a void function that will merge the contents of two text files containing the chemical elements into a single binary file. The function's parameters will be three file pointers; each text file will contain an integer atomic number followed by the element name, chemical symbol and atomic weight. Here are two sample lines: 11 Sodium Na 22.9920 Calcium Ca 40.08 The function can assume that one file does not two copies of the same elements and that the binary output file should have the same property. IN C PLEASE
URGENT: Python Expense Management: This system will add, deduct, update, sort, and export expenses to a file. The program will initially load a collection of expenses from a .txt file and store them in a dictionary. All of the necessary functions and unit testing are provided below in expenses.py, expenses_test.py, and expenses.txt: expnses.py: def import_expenses(file): '''Reads data from a given file and stores the expenses in a dictionary, where the expense type is the key and the total expense amount for that expense is the value. The same expense type may appear multiple times in the file. Ignores expenses with missing or invalid amounts.''' # create empty dict expenses = {} #TODO insert your code return expenses def get_expense(expenses, expense_type): '''Returns the value for the given expense type in the given expenses dictionary. Prints a friendly message and returns None if the expense type doesn't exist.''' # TODO insert your code def add_expense(expenses,…