Write a program named filereader.py that reads and displays the data in friends.txt. This program should also determine and print the average age of the friends on file. That will require an accumulator and a counter. Use a while loop to process the file, print the data, and modify the accumulator and counter. Then close the file and display the average age accurate to one decimal place. SAMPLE OUTPUT My friend Denny is 24 My friend Penny is 28 My friend Lenny is 20 My friend Jenny is 24 Average age of friends is 24.0

Write a program named filereader.py that reads and displays the data in friends.txt. This program should also determine and print the average age of the friends on file. That will require an accumulator and a counter. Use a while loop to process the file, print the data, and modify the accumulator and counter. Then close the file and display the average age accurate to one decimal place. SAMPLE OUTPUT My friend Denny is 24 My friend Penny is 28 My friend Lenny is 20 My friend Jenny is 24 Average age of friends is 24.0

EBK JAVA PROGRAMMING

9th Edition

ISBN:9781337671385

Author:FARRELL

Publisher:FARRELL

Chapter13: File Input And Output

Section: Chapter Questions

Problem 6PE

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A program reads the data from a file called inputFile.dat and, after doing some calculations, writes the results to a file called outFile.dat. Answer the following questions:a. After the program executes, what are the contents of the file inputFile.dat?b. After the program executes, what are the contents of the file outFile.dat if this file was empty before the program executed?c. After the program executes, what are the contents of the file outFile. dat if this file contained 100 numbers before the program executed?d. What would happen if the file outFile.dat did not exist before the program executed?
Create a program that calculates the average test scores. Given the student’s name and five test scores, calculate the test scores. The student’s name, five test scores and the average test score is stored in the file testaverage.txt. The data is input from the file test.txt. Sample Run Input file (Contents of the file test.txt) Andrew Miller 87.50 89 65.75 37 98.5 Output file (Contents of the testaverage.txt) Student Name: Andrew Miller Test Scores: 87.50 89.00 65.75 37.00 98.50 Average test score: 75.75
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Write a program that reads a student's name followed by five test scores. The program should output the student's name, the five test scores, and the average test score. Output the average test score with two decimal places. The data to be read is stored in a file called test.txt. The output should be stored in a file called testavg.txt. test.txt: A file containing the student names and the five test scores for every student. Andrew Miller 87.50 89 65.75 37 98.50 Green Sheila 91.05 75.88 50.0 65.5 74.30 Sethi Amit 49.82 75 30 74 86.30 testavg.txt: A file containing the student name, the five test scores, and the average of the five test scores for each student.
in python 2. Now write a program named filereader.py that reads and displays the data in friends.txt. This program should also determine and print the average age of the friends on file. That will require an accumulator and a counter. Use a while loop to process the file, print the data, and modify the accumulator and counter. Then close the file and display the average age accurate to one decimal place. See the Sample Output..SAMPLE OUTPUT My friend Denny is 24My friend Penny is 28My friend Lenny is 20My friend Jenny is 24Average age of friends is 24.0
2. Now write a program named filereader.py that reads and displays the data in friends.txt. This program should also determine and print the average age of the friends on file. That will require an accumulator and a counter. Use a while loop to process the file, print the data, and modify the accumulator and counter. Then close the file and use an f-string display the average age accurate to one decimal place. See the Sample Output..SAMPLE OUTPUT My friend Denny is 24My friend Penny is 28My friend Lenny is 20My friend Jenny is 24Average age of friends is 24.0
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The iostream library provides mechanisms for error handling, such as the failbit, badbit, and eofbit. However, if these are not checked after an input/output operation, it can lead to incorrect program behavior. For example, if you attempt to read past the end of a file without checking eofbit, the program may enter an infinite loop. *Can you provide a simple program of the above paragraph? How do you correct this vunerability?*
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