Code needs to be in C$++.$

You are given a file with the following format:

$$Student$\_$name, student$\_$id$,$ course$\_$code, grade$$

Alireza, $2232,$ COMP$217,78\mathrm{.}50$

Let this file serve as your database. You are required to calculate the gpa for each student and provide an output file as follows:

Alireza, $76\mathrm{.}4$

Consider that this file list of all students with all courses taken by each.

Requirements:

Input$/$Output Files: Your program should ask the user to enter the name of the input file and the name of the output file.

Reading Data: Open and read the input file line by line. Ensure your program gracefully handles the case where the file does not exist.

Writing Data: Write the processed data to the output file, ensuring each processed line corresponds to its original line in the input file.

Error Handling: Your program should handle any potential errors, such as issues with file opening, reading, or writing, with appropriate error messages.

Code Documentation: Comment your code adequately to explain the logic and any assumptions made.