function toLetterGrade(float $score): string {
// Define score thresholds and grades
$scores = [95.0, 90.0, 85.0, 80.0, 75.0, 70.0, 65.0, 60.0];
$grades = ["A+", "A", "B+", "B", "C+", "C", "D+", "D"];
// Iterate through scores and find the grade
$count_scores = count($scores);
for ($i = 0; $i < $count_scores; $i++) {
if ($score >= $scores[$i]) {
return $grades[$i];
}
}
return "F"; // Default grade if none of the scores match
}
// Test the program with individual scores
echo toLetterGrade(95) . PHP_EOL; // A+
echo toLetterGrade(90) . PHP_EOL; // A
echo toLetterGrade(80) . PHP_EOL; // B
echo toLetterGrade(60) . PHP_EOL; // D
echo toLetterGrade(50) . PHP_EOL; // F
/*
run:
A+
A
B
D
F
*/
