C++ for Engineers and Scientists
4th Edition
ISBN: 9781133187844
Author: Bronson, Gary J.
Publisher: Course Technology Ptr
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Question
Chapter 7.5, Problem 8E
a)
Program Plan Intro
- Include library file for various operations.
- Declare file_name and line variables of string type.
- Create a data.txt file to store data values.
- Use while loop to read data from the file named data.txt.
- int main() function is used to perform all the task.
- Display the calculated results to the user.
- Close the file after displaying the content of the file.
Program Description: The main purpose of the program is to read and display the data from the data.txt file.
b)
Program Plan Intro
Program Plan:
- Include library file for various operations.
- Declare uChoice, num, counter, sum,and loop variables of int type.
- Create a data.txtand tempfile.txt file to store data values.
- Use while loop to read data from the file named data.txt.
- int main() function is used to perform all the task.
- Display the calculated results to the user.
- Close the file after displaying the content of the file.
Program Description: The main purpose of the program is to modify the program given in part (a) such that the program will be able to:
- Delete the first number of the file.
- Add a new integer data value at end of the file.
- Compute and display the average of all numbers given in the file.
- Overwrite theold file data with the new list of numbers.
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Chapter 7 Solutions
C++ for Engineers and Scientists
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