1. Write a $\mathrm{C}++$ program that prompts the user to enter a file name that contains the scores of students in a quiz. Each line in the input file contains a student name followed by the student's score (as shown in the sample file to the right). The program should then find out the students with the minimum score and the maximum score and display their names and scores. CS.vs.935||

1. Write a $\mathrm{C}++$ program that prompts the user to enter a file name that contains the scores of students in a quiz. Each line in the input file contains a student name followed by the student's score (as shown in the sample file to the right). The program should then find out the students with the minimum score and the maximum score and display their names and scores. CS.vs.935||

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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C++ Add a search command that asks the user for a string and finds the first line that contains that string. The search starts at the first line currently displayed and stops at the end of the file. If the string is found, the line that contains it is displayed at the top. In case the user enters a string X that does not occur in the file, the program should print the error message: ERROR: string "X" was not found.
"In the student sample program files for this chapter, you will find a text file named house_prices.csv. The file contains the following data about houses for sale in a city: Price Number of bedrooms Number of bathrooms Square feet of living space The data stored in each line is formatted in the following way: Price,Bedrooms,Bathrooms,SquareFeet Notice that the data items are separated by commas. The first line in the file looks like this: 221900,3,1,1180 The data stored in this line is: Price = $221,900 Bedrooms = 3 Bathrooms = 1 Square feet = 1,180 Design a class that has properties for the four pieces of data. In an application, read the file and store each house’s data in an instance of the class. The class instances should be stored in a List. The application should let the user search the List for the prices of houses with the number of bedrooms within a range, the number of bathrooms within a range, and the square feet of living space within a range. For…
Python Create a text file named “Books.txt”.Open the text file and add the name of at least two books.In your Python3 code file, create a function that will loop through and display a menuwith options to Display, Add, Exit. It will end once the user selects the option for exit.Create another function that will accept the user’s choice with the outcome for eachoption.Display – read the file and output each lineAdd – prompt the user for a book name and append it to the file. Exit – close the file and exit the loopRun the code to display your output.
DescriptionWrite a program to compute average grades for a course. The course records are in a single file and are organized according to the following format: each line contains a student's first name, then one space, then the student's last name, then one space, then some number of quiz scores that, if they exist, are separated by one space. Each student will have zero to ten scores, and each score is an integer not greater than 100. Your program will read data from this file and write its output to a second file. The date in the output file will be nearly the same as the data in the input file except that you will print the names as last-name, first-name; each quiz score, and there will be one additional number at the end of each line:the average of the student's ten quiz scores.Both files are parameters. You can access the name of the input file with argv[1]. and the name of the output file with argv[2].The output file must be formatted as described below: 1. First and last names…
In Python, Create a program that will write 100 integers created randomly in a file. The integers will be separated by a space in the file. Read the data back from the file, and display the sorted data. The program should prompt the user to enter a file name. Utilize the following function headers for this problem: Main() WriteNumbers(filename) ReadNumbers(filename) The main function will first prompt the user to enter the filename. Then the main function calls WriteNumbers-then ReadNumbers. The WriteNumbers function opens an output file and writes 100 random numbers as long a large string text. Do not use lists for this problem- please just write a random number followed by a space 100 times. The ReadNumbers function will then read the text file and display the numbers sorted. In order to sort the numbers, read the big string and then split it into a list. Now convert them into integers by using list comprehension and then sort the list. Loop through the list and print each…
Data File: Example #1AAAAABBBBBCCCCCDDDDDAAEBCBAFBBCDCECDADDEFEEFFFExample #2AAATAABTBBBBCCCCTCDDTDDDAASAABBSBBCCSCCDSDDDEEEAEEFBFFFDDF Write a program that will give the user a brief introduction, then allow the user to type in the name of the file to be analyzed, the name of the data file to generate, and then process the data to match the output that is shown below. This DNA test measures the various parts of the sequence and assigns them a letter. While the letters could be anything from A to Z, the only letters that matter for this test are the letters {A,B,C,D} all other letters can be ignored completely. A sample will be tested, given a length of time and then tested again. Each time the scientist will generate a line of data. Here is one Example: Example #1 AAAAABBBBBCCCCCDDDDD AAEBCBAFBBCDCECDADDEFEEFFF At first glance the sample looks significantly different after the second test. But if you look at the data, you will note that since we only care about A,B,C,D’s that the…
3.5: This problem will require your program to read a file of student records.Before you the coding part, manually create a text file named cs521_3_5_input.txt Populate the file with rows of comma separated records in of the format:  Name of Student  Student ID  GPA For example (you can use your own names and data): Jerry Seinfeld, 1, 3.7Elaine Benes, 52, 2.8George Costanza, 13, 3.9 Cosmo Kramer, 24, 3.4 Now write a python program that performs the following steps: a. Open and read the file created above line by line  The text file must be stored in the same directory as your program Parse the data in each row (records of one student) into a 3 element tuple Store each tuple in a single list, making an array that will contain all student records After the input file is completely processed, print the list of tuples  Include an appropriate description  The list object does not need to be formatted  There is no output file! Example Output:Student Records: [(Jerry Seinfeld, 1,…
1. Create a file that contains 20 integers or download the attached file twenty-integers.txttwenty-integers.txt reads:12 20 13 45 67 90 100 34 56 89 33 44 66 77 88 99 20 69 45 20 Create a program that: 2. Declares a c-style string array that will store a filename. 3. Prompts the user to enter a filename. Store the file name declared in the c-string. 4. Opens the file. Write code to check the file state. If the file fails to open, display a message and exit the program. 5. Declare an array that holds 20 integers. Read the 20 integers from the file into the array. 6. Write a function that accepts the filled array as a parameter and determines the MAXIMUM value in the array. Return the maximum value from the function (the function will be of type int). 7. Print ALL the array values AND print the maximum value in the array using a range-based for loop. Use informational messages. Ensure the output is readable.
A file named data.txt contains an unknown number of lines, each consisting of a single integer. Write a program that creates the following three files: dataplus.txt dataminus.txt zeros.txt The program should read each line of the data.txt file and perform the following: If the line contains a positive number, that number should be written to the dataplus.txt file. If the line contains a negative number, that number should be written to the dataminus.txt file. If the line contains the value 0, do not write the value to a file. Instead, keep a count of the number of times 0 is read from the data.txt file. After all the lines have been read from the data.txt file, the program should write the count of zeros to the zeros.txt file.
In Python Write a program that consists of (at least) two function: A function that creates and saves data in a file. The saved data represents exam grades. In the function, you will create n random numbers in the range [0,100], where n is the number of students. The function can be called as follows: createFile(filename, n) Main function, in which the user inputs the file name and the number of students, then the main calls function createFile. The main should perform validation for n (should be > 0), and the filename (should end with .txt). I will explain how to validate strings in the coming lecture. Hint: a good developer will write four functions to solve the problem.
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