Write a PHP program to test whether two lines PQ and RS are parallel
- 2021-09-08
- mhanasmh00489829403
- م120
الأجوبة
<?php
fscanf(STDIN, '%d', $n);
for ($i = 0; $i < $n; $i++) {
fscanf(STDIN, '%f %f %f %f %f %f %f %f', $x1, $y1, $x2, $y2, $x3, $y3, $x4, $y4);
$pq = INF;
if ($x2 - $x1 !== 0.0) {
$pq = ($y2 - $y1) / ($x2 - $x1);
}
$rs = INF;
if ($x4 - $x3 !== 0.0) {
$rs = ($y4 - $y3) / ($x4 - $x3);
}
echo $pq === $rs ? 'PQ and RS are parallel.' : 'PQ and RS are not parallel.';
echo PHP_EOL;
}
?>
Sample Input:
2
1.0 0.0 3.0 2.0 2.0 2.0 0.0 0.0
4.0 3.0 10.0 7.0 14.0 5.0 8.0 10.0