Write a program that displays the cost of different options at a vending machine. Your program must, read in a selection char from a file called input.txt, • use case statements to select the price linked to the input char, • write the price corresponding to the char to a file called output.txt.

Write a program that displays the cost of different options at a vending machine. Your program must, read in a selection char from a file called input.txt, • use case statements to select the price linked to the input char, • write the price corresponding to the char to a file called output.txt.

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

given a text file (data1.txt) that consists of different garbage strings.1.Create a new file, from data1.txt, which contains all the strings from theprevious file with the following constraints:-No special characters or digits must be in the new string-No repetition of letters in the new string• Save the newly generated text-file as data2.txtThe following example in table 1 shows what your output file should contain.data1.txt data2.txtf5@p fpp&ott6 potInstructions:Create a class cleanFile to read in data1.txtClean the data inside the files following the rules in the above exampleWrite the cleaned data into data2.txt
Write a program that reads student data from a file, compute their GPA and writes the results to a different file. 1. The user should have the option to either enter their text file that contains the student grades or use the provided text file that contains theinformation. The data in "indata.txt" should look similar to this, Lara_Croft75 70 91 69 89Chris_Redfield68 88 79 85 94Johnny_Cochran69 98 95 77 80Wanda_Maximoff84 86 98 95 92Luke_Skywalker74 96 80 98 97William_Kurt89 52 99 81 58Samuel_Jackson50 96 50 64 95END_OF_FILE This is supposed to be in python. This is what I have so far. I have no experience I apologise. I am trying to finish the GPA calculating program currently but am having trouble finishing it. grade = input("enter grades")points = 0 if grade is 90-99:total_points = 4.0if grade is 80-89:total_points = 3.0if grade is 70-79:total_points = 2.0if grade is 60-69:total_points = 1.0if grade is 50-59:total_points = 0.0gpa = total_points/len(grade)print(gpa,"is gpa")
Chapter 4. PC #14. Line Numbers (page 265) Write a 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. Test Case 1 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.txt ENTER1: a\n2: b\n3: c\n4: d\n
WHATS THE ALGORITHIM FOR THIS The course records are shown below: Each student has 4 assignments. 108194 9 10 10 10 197526 10 10 10 10 197008 10 10 0 10 197746 10 10 9 10 108154 10 0 10 9 Create an input file ‘CSassignments.txt’ using an editor such as Notepad++ with a student number, then a space, then four assignment marks on one line. The assignment marks are whole numbers and are separated by a space. Your C++ program will read from the file ‘CSassignments.txt’ and write to a second file ‘CSgrades.txt’ which includes the average of the student’s four assignments. e.g. 108194 9 10 10 10 9.75 Your C++ program should work with any number of records in the ‘CSassignments.txt’ input file – that is –…
Chapter 4. PC #14. Line Numbers (page 265) Write a 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. Test Case 1 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.txt ENTER1: a\n2: b\n3: c\n4: d\n
Consider a file named transaction.txt which contains unknown number of lines. Each line contains data of one transaction as follows: username (string), amount (float), and membership number (int). Write a C++ program that reads the data from the file, then displays on screen the number of users, the total amount, the average of amounts, the lowest amount and the highest amount. Reading from the file should stop when one or more of the conditions given below becomes true:(a) The end of file has been reached. (b) The “user999” is reached.
Consider a file named transaction.txt which contains unknown number of lines. Each line contains data of one transaction as follows: username (string), amount (float), and membership number (int). Write a C++ program that reads the data from the file, then displays on screen the number of users, the total amount, the average of amounts, the lowest amount and the highest amount. Reading from the file should stop when one or more of the conditions given below becomes true:(a) The end of file has been reached. (b) The “user999” is reached.transaction.txtHassan 12.5 12345 Mariam 5.2 87542 Zahra 33.1 93568 :::: ::Sample Screen OutputNumber of users: 54 Transactions total amount: 2658.7 The average of amounts: 120 The highest amount: 280 The lowest amount: 5.2
write a program that computes and prints the average of the numbers in a text file. you should make use of two higher-order functions to simplify the design 1. Modify the data in numbers.txt 45.6 66.7 88.8 100.3 22.4 98.1 2. Run the average.py and numbers.txt to get the desired output. Enter the input file name: numbers.txt The average is 70.31666666666666 3. Please explain the algorithm in 3 sentences Please screenshot input ans output window
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…
Modify task5.c so it will print out a content of a file backward. You will need to use lseek() to accomplish this task. Modify this program to print the file backward.*/ #include <stdio.h>#include <unistd.h>#include <fcntl.h> int main(int argc, char *argv[]){ char *filename = argv[1]; int input = open(filename, O_RDONLY); char c; while(1){ int r = read(input,&c,1); if(r==0) break; write(1,&c, 1); } close(input); return 0;}
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.