Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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please be as clear as you can.  

Write a C++ program, named "average.cpp". Your program should:

  1. Prompt the user to enter the name of a data file
  2. Open and read the data stored in the file while computing the average, as well as finding the minimum and maximum value in the file
  3. After reading the file, close the file, and display the values read, the minimum, maximum, and average of the values

Testing and Compilation

Since your program will be reading from a data file, first copy the data file into your working directory. You can do this like so:

ranger0$ cp $PUB/lab5-*.dat ./ This command will copy two data files (lab5-1.dat and lab5-2.dat) into your working directory.

After copying the data files into your working directory, compile your code like so:

ranger0$ g++ average.cpp -o average Here is an example execution of the program using the first data file: Enter the name of the data file: lab5-1.dat The values read are: 1 30 2 -40 3 25 4 64 5 89 6 103 7 45 8 89 9 34 10 -2 11 15 12 63 12 values are read. There are 7 values greater than its previous value. The largest is 103. The smallest is -40. The average is 42.92.

Here is an example run of the program using the second data file:

Enter the name of the data file: lab5-2.dat The values read are: 1 500 2 430 3 240 4 -390 5 -230 6 100 7 394 8 444 9 882 10 -30 11 -29 12 683 13 732 14 990 15 -538 16 93 16 values are read. There are 10 values greater than its previous value. The largest is 990. The smallest is -538. The average is 266.94.

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