Error in my program.

Greetings,
I have this code that when i input 5 scores it should average them and give me a grade instead of its percentage. Instaed of me summing say 5, 100% scores togther my grade should dispolay an A but the grade i always get is an F, go figure... anyways can anyone help me figure out why this is happening.

Code:

#include <iostream>
#include <string>		//cin, cout, <<, >>
using namespace std;

int main()
{
	double score1, score2, score3,
			score4, score5, percentage;
	char grade;

	cout << "Input five test scores: ";
	cin >> score1, score2, score3,
		   score4, score5;

	percentage = 5 / (score1 + score2 + score3 + score4 + score5);

	if (percentage >= 90)
		grade  = 'A';	//grade must be 90 or better for an A

	else if (percentage >= 80)	//grade must be 80 or better for an B
		grade  = 'B';

	else if (percentage >= 70)	//grade must be 70 or better for an C
		grade  = 'C';

	else if (percentage >= 60)	//grade must be 60 or better for an D
		grade  = 'D';

	else
		grade  = 'F';	//anything less than 60 % is failing
	cout << "\nYour letter grade is " << grade << "\n";
	return percentage;

}

Two problems:
cin >> score1, score2, score3,
score4, score5;
Use >> instead of ,
Your compiler should've given you warnings. If you ignore them, you may see more F's

percentage = 5 / (score1 + score2 + score3 + score4 + score5);
should be
(score1 + score2 + score3 + score4 + score5) / 5;

>cin >> score1, score2, score3, score4, score5;
Uh, no. This won't work as you expect, try this instead:

cin >> score1 >> score2 >> score3 >> score4 >> score5;

>percentage = 5 / (score1 + score2 + score3 + score4 + score5);
This is your problem, the additions are performed first, but you still divide 5 by the total. It should be the other way around:

percentage = (score1 + score2 + score3 + score4 + score5) / 5;

-Prelude

Thanks!
Youo wouldn't believe me if I told you so but I am embarrased to say I looked that over for a long time last night. For the life of me I could not see it until now... THANK YOU!

No more F's now.