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Database System Concepts
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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### 24. Using Files—Numeric Processing If you have downloaded this book's source code from the Computer Science Portal, you will find a file named Random.txt in the Chapter 05 folder. (The Portal can be found at www.pearsonhighered.com/gaddis.) This file contains a long list of random numbers. Copy the file to your system, then write a program that opens the file, reads all the numbers from the file, and calculates the following: A) The number of numbers in the file B) The sum of all the numbers in the file (a running total) C) The average of all the numbers in the file The program should display the number of numbers found in the file, the sum of the numbers, and the average of the numbers. --- ### 25. Using Files—Student Line Up Modify the Student Line Up program described in Programming Challenge 14 so it gets the names from a file. The file’s contents are shown below. When there is no more data to be read, the program should display the name of the first student in line and the name of the last student in line. --- There are no graphs or diagrams in the provided text content. The content outlines two programming challenges that involve working with files for numeric processing and student data management. The first challenge focuses on reading, tallying, and averaging numbers from a file. The second challenge involves modifying an existing student lineup program to read data from a file and identify the first and last students in line based on the read data.
Transcribed Image Text:### 24. Using Files—Numeric Processing If you have downloaded this book's source code from the Computer Science Portal, you will find a file named Random.txt in the Chapter 05 folder. (The Portal can be found at www.pearsonhighered.com/gaddis.) This file contains a long list of random numbers. Copy the file to your system, then write a program that opens the file, reads all the numbers from the file, and calculates the following: A) The number of numbers in the file B) The sum of all the numbers in the file (a running total) C) The average of all the numbers in the file The program should display the number of numbers found in the file, the sum of the numbers, and the average of the numbers. --- ### 25. Using Files—Student Line Up Modify the Student Line Up program described in Programming Challenge 14 so it gets the names from a file. The file’s contents are shown below. When there is no more data to be read, the program should display the name of the first student in line and the name of the last student in line. --- There are no graphs or diagrams in the provided text content. The content outlines two programming challenges that involve working with files for numeric processing and student data management. The first challenge focuses on reading, tallying, and averaging numbers from a file. The second challenge involves modifying an existing student lineup program to read data from a file and identify the first and last students in line based on the read data.
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