// asssignment 1 question 3
// group members: -nurul syamira bt amat jifri
// -muhammad rafly
#include <iostream>
using namespace std; 

double totalMarks(double, double);
double averageMarks(double, int);

int main()
{
	int num;
	double total = 0, mark, average;
	
	cout << "Enter the number of assesments: ";
	cin >> num;
	
	for (int i=1; i <= num; i++)
	{
	 	cout << "Enter mark of assesment" << i << "(between 1-100): ";
		cin >> mark;
	
		total = totalMarks(mark, total);
	}

	average = averageMarks(total, num);
	
		if (average >= 90)
			cout << "The grade is A";
		else if (average >= 80)
			cout << "The grade is B";
		else if (average >= 70)
			cout << "The grade is C";
		else if (average >= 60)
			cout << "The grade is D";
		else
			cout << "The grade is F";
	
}

double totalMarks(double m, double total)
{
	return total+m;
}

double averageMarks(double t, int n)
{
	return t/n;
}