<?php


function calcu(q1,q2,q3,q4,q5,q6) {
	$score = array($_POST['q1'],$_POST['q2'],$_POST['q3'],$_POST['q4'],$_POST['q5'],$_POST['q6']);
	$i=0;
	foreach ($score as $grade) {
		$i++;
		if(empty($grade)) {
			$msg .= "Please enter score for Quiz ".$i."<br />";
		}
	}

	//Calculate
	if (empty($msg)) {
		rsort($score);
		//Graded Quizes
		$final = "<h3>Graded Quizes</h3>";
		for($i=0;$i<(count($score)-1);$i++) {
			$final .= $score[$i]."%<br />";
			$total=$total+$score[$i]; //For Average
		}
		//Ungraded Quiz
		$final .= "<h3>Dropped Quiz</h3>";
		$final .= $score[count($score)-1]."%<br/>";
		//Average
		$final .= "<h3>Quiz Final</h3>";
		$avg = $total/(count($score)-1);
		//$avg = $avg*100;
		$avg = round($avg,3);
		$final .= $avg."% - ";
		//Find Letter grade
		if ($avg>=90){
			$final .= "A<br/>";
		}
		else if ($avg<90 && $avg>=80){
			$final .= "B<br/>";
		}
		else if ($avg<80 && $avg>=70){
			$final .= "C<br/>";
		}
		else if ($avg<70 && $avg>=60){
			$final .= "D<br/>";
		}
		else{
			$final .= "F<br/>";
		}
	}
}

?>