Write a C$++$ program to read student exam data from the provided grade$\_$data.txt file,

calculate average scores, assign letter grades, and output the results to a formatted file.

Requirements:

Input:

Read student ID and exam scores from the provided grade$\_$data.txt file.

Calculations:

Calculate the average score for each student and store in vector

Assign a letter grade based on the average score using the following

criteria:

A: $90-100$

B: $80-89$

C: $70-79$

D: $65-69$

F:$<mn>6</mn><mn>5</mn>$

Output:

Output a formatted table to a file named results.txt$.$

The table should have the following format:

OOP Approach:

Use an extemal class to encapsulate the data and functions related to

student information, calculations, and output.

Four User$-$Defined Functions:

Read Data from File: Reads student ID and exam scores from the file into

appropriate vectors.

Calculate Averages: Calculates the average score for each student.

Assign Grades: Assigns letter grades based on the average scores.

Format and Output Table: Formats the output table and writes it to the file

results.txt$.$

Please use as simple of code for C$++$ in code blocks. The input file is the last image