Write a program that reads student scores from a file. You do not know how many

Question

Write a program that reads student scores from a file.

You do not know how many students in the class (therefore in the file)

The program finds the average for the class.

then it assigns the letter grade as follows:

average + 10% and above is A

average and above is B (less than the A grade above)

average - 10% and above is a C (less than B above)

less than average -10% is F

I am using visual studio, c++, and will like to see a reference a working code while doing my own, just as reference, any help would be awsome

Explanation / Answer

NOTE: I have completed the code for your assignment. Please check and let me know if you face any issues. I will revert back within 24 hours.

Code:
#include <iostream>
#include <fstream>
using namespace std;

int main()
{
double score, sum_scores = 0, avg;
int no_of_scores = 0;
char grade;
  
// opening file scores.txt containing scores in read mode
ifstream infile ("scores.txt");
// reading each score from file
while(infile >> score){
// counting number of scores and summing them
no_of_scores++;
sum_scores += score;
}
avg = sum_scores/no_of_scores;
cout << " Average of the class is: " << avg <<endl;
cout << " ===================";
cout << " Grading the student";
cout << " ===================";
cout << " Score Grade" << endl;
  
// resettting the file pointer to beginning again
infile.clear();
infile.seekg(0, ios::beg);
  
while(infile >> score){
if(score >= (avg + 10/100))
grade = 'A';
else if(score >= avg)
grade = 'B';
else if(score >= (avg - 10/100))
grade = 'C';
else if(score < (avg - 10/100))
grade = 'F';
cout << score << " " << grade << endl;
}
infile.close();
return 0;
}

Output screenshot:
https://pasteboard.co/GD3H7sE.png

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