We will ask you and your classmates to write on the whiteboard the number of kids your immediate family including you. E.g., if you have 1 sister or brother, write 2. • We will put the data into a file n_kids.txt, one number per line, and will post it in this assignment shortly after class. • Starting with the provided starter file n_kids.py, write a program that reads the data from n_kids.txt, does some math, then displays the following on the screen: Number of families: Total number of kids:

We will ask you and your classmates to write on the whiteboard the number of kids your immediate family including you. E.g., if you have 1 sister or brother, write 2. • We will put the data into a file n_kids.txt, one number per line, and will post it in this assignment shortly after class. • Starting with the provided starter file n_kids.py, write a program that reads the data from n_kids.txt, does some math, then displays the following on the screen: Number of families: Total number of kids:

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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Suppose you are given a text file that contains the names of people. Every name in the file consists of a first name and last name. Unfortunately, the programmer that created the file of names did not guarantee that each name was on a single line of the file. Read this file of names and write them to a new text file sorted according to first name, one name per line. For example, if the input file contains Ed Marston Bob Jones Jeff Williams Fred Charles The output file should be Bob Jones Ed Marston Fred Charles Jeff Williams Use arrays to solve the problem.
Write a program that reads two input files whose lines are ordered by a key data field. Your program should merge these two files, writing an output file that contains all lines from both files ordered by the same key field. As an example, if two input files contain student names and grades for a particular class ordered by name (the key field), merge the information as shown below. File 1 and file 2 are supplied. Here is an algorithm to merge the data from two files: Read a line from each data file While the end of both files has not been reached While the end of both files has not been reached Write the line from file 1 to the output file and read a new line from file 1. Else Write the line from file 2 to the output file and read a new line from file 2. Write the remaining lines (if any) from file 1 to the output file. Write the remaining lines (if any) from file 2 to the output file. See the Merging Filesslides attachedto the project in Canvasfor a visual look at this algorithm.
Write a program that reads a list of enrollments from a file and prints a class roster for the teacher. Make the class roster line up as neatly as you can and still fit on the screen. You can choose the actual values to use for your data. Make sure to do enough sets of data to well test your program! (Empty data set, normal data set, data with large values, data with short values, etc.) Also, your program can't know ahead of time how many people are enrolled in the class... Don't forget to read the file's name from the user and protect your program against any errors that may occur during the opening of the file. Try to use functions to break up the program into more manageable pieces. USING C++ As an example, you might have the data file contain:
Write a program that will read in a file of student academic credit data and create a list of students on academic warning. The list of students on warning will be written to a file. Each line of the input file will 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). The following shows part of a typical data file: Smith 27 83.7 Jones 21 28.35 Walker 96 182.4 Doe 60 150 The program should compute the GPA (grade point or quality point average) for each student (the total quality points divided by the number of semester hours) then write the student information to the output file if that student should be put on academic warning. A student will be on warning if he/she has a GPA less than 1.5 for students with fewer than 30 semester hours credit, 1.75 for students with fewer than 60 semester hours credit, and 2.0 for all other students. The file Warning.java contains a skeleton of the…
Write a program that will read in a file of student academic credit data and create a list of students on academic warning. The list of students on warning will be written to a file. Each line of the input file will 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). The following shows part of a typical data file: Smith 27 83.7 Jones 21 28.35 Walker 96 182.4 Doe 60 150 The program should compute the GPA (grade point or quality point average) for each student (the total quality points divided by the number of semester hours) then write the student information to the output file if that student should be put on academic warning. A student will be on warning if he/she has a GPA less than 1.5 for students with fewer than 30 semester hours credit, 1.75 for students with fewer than 60 semester hours credit, and 2.0 for all other students. The file Warning.java contains a skeleton of the…
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In Python IDLE 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 Then the program should do a mass replacement of all spaces with a ‘-‘, and then replace any uppercase letters with lowercase letters. After the replacement of the spaces, the count of letters, digits, and spaces should be rerun, the number of replacements indicated, and a second report of letters, digits and spaces should be printed. Save the results of the changes in a file named “testoutput.txt”. This file must be submitted as part of the submission for your lab. Output should look like this: Uppercase letters: 20 Lowercase letters: 310 Digits: 4 Spaces: 82 >>> Hint: This program does not need to use any lists – the entire file can be read into one string. Problem 2. Date Printer - Write a program…
Write a program that reads by asking the user the name of the file. After opening it, read it into the structure of array. The input file is in the format: firstName lastName age result (Contents of the input file) The Temp 0 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 Edward Newman 61 3 1 2 2 2 3 5 3 5 3 5 1 3 1 4 3 5 2 5 3 5 1 3 1 5 1 5 3 1 1 3 1 3 1 3 3 5 2 1 2 3 5 1 1 3 3 5 3 1 5 The program reads the result into the structure called TheResult. The constants and the structure to be used is given below: const int EXTROVERSION = 0; const int AGREEABLENESS = 1; const int CONSCIENTIOUSNESS = 2; const int NEUROTICISM = 3; const int OPEN_TO_EXPERIENCE = 4; const int NUM_QUESTIONS = 50; const int NUM_RESULT = 5; const int MAX_RESULT = 5; struct TheResult { string firstName; string lastName; int age; int answers[NUM_QUESTIONS]; // result double normalizedResult[NUM_RESULT]; }; The name of the input file is…
Modify your program from Learning Journal Unit 7 to read dictionary items from a file and write the inverted dictionary to a file. You will need to decide on the following: How to format each dictionary item as a text string in the input file. How to covert each input string into a dictionary item. How to format each item of your inverted dictionary as a text string in the output file. Create an input file with your original three-or-more items and add at least three new items, for a total of at least six items. Include the following in your Learning Journal submission: The input file for your original dictionary (with at least six items). The Python program to read from a file, invert the dictionary, and write to a different file. The output file for your inverted dictionary. A description of how you chose to encode the original dictionary and the inverted dictionary in text files. Show more... Modify your program from Learning Journal Unit 7 to read dictionary items from a…
Write a program that reads a list of enrollments from a file and prints a class roster for the teacher. Make the class roster lineup as neatly as you can and still fit on the screen.You can choose the actual values to use for your data. Make sure to do enough sets of data to well test your program!(Empty data set, normal data set, data with large values, data with short values, etc.)Also, your program can't know ahead of time how many people are enrolled in the class... using c++
For this program, assume you have an input file with several lines of text. Each line has a student's last name, followed by a space and then 4 numbers which represent his/her grades. Your program should read this input file and produce an output file with the same number of lines, each line showing the last name and the average of the student's scores. "grades.txt" is the file your program should read. "badformat.txt" is an example of a file that your program can't read, so a clear error message should be generated, as shown in the sample output. Your program must catch all exceptions. Your main method must NOT have a "throws" clause - it must catch all exceptions and dea' with them appropriately. Other methods may throw exceptions, as long as the main method catches them. I don't expect you to examine any filenames to make sure they're valid. Instead, you should use the filename the user gives you and try to open a file by that name. That will throw an exception if the filename is…
Write a program that receives a coded message file(Lab3ExtraCreditCT.txt) from your local espionage agent and decodes it into a file using standard English. The problem is your agent forgot to tell you the key used to decode the message. Fortunately, this is a simple substitution code consistently using 1 alphanumeric character to represent another, this is case sensitive. All other characters are not substituted, so a space will always be a space, a – will always be a –, a @ will always be a @, etcetera. You may use the following table to help you, it contains the most common letters used in the English language in descending order. E A R I O T N S L C U D P M H G B F Y W K V X Z J Q 0 5 3 2 4 6 8 1 9 7 Using the following key to convert plaintext to coded text: Plaintext = Now is the time for all good men to come to the aid of their country. Key = THEQUICKBROWNFXJMPSVLAZYDG The file your program outputs should look like this: Coded Text = Fxz bs vku vbnu ixp tww…