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feat: lab3 complete - ENE212-0061/2023 #18

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69 changes: 43 additions & 26 deletions starter/lab3_task1.php
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* ICS 2371 — Lab 3: Control Structures I
* Task 1: Simple if and if-else — Warm-Up Exercises [5 marks]
*
* @author [Your Full Name]
* @student [Your Reg Number, e.g. SCT212-XXXX/2024]
* @author Declan Munene
* @student ENE212-0061/2023
* @lab Lab 3 of 14
* @unit ICS 2371
* @date [Date completed]
* @date April 7, 2026
*/

// ══════════════════════════════════════════════════════════════
// EXERCISE A — Temperature Alert System
// ══════════════════════════════════════════════════════════════
// Declare $temperature = 39.2
// Use separate if statements (not if-else) to print:
// "Normal" if temp is between 36.1 and 37.5 inclusive
// "Fever" if temp > 37.5
// "Hypothermia Warning" if temp < 36.1
// Test with: 36.8, 39.2, 34.5 — screenshot each
$temperature = 39.2;

// TODO: Exercise A — your code here
// Using separate if statements only (no else/elseif)
if ($temperature >= 36.1 && $temperature <= 37.5) {
echo "Temperature ($temperature): Normal<br>";
}

if ($temperature > 37.5) {
echo "Temperature ($temperature): Fever<br>";
}

if ($temperature < 36.1) {
echo "Temperature ($temperature): Hypothermia Warning<br>";
}

// ══════════════════════════════════════════════════════════════
// EXERCISE B — Even or Odd
// ══════════════════════════════════════════════════════════════
// Declare $number = 47
// Use if-else to print "$number is EVEN" or "$number is ODD"
// Also check divisibility by 3, by 5, and by both 3 and 5 — one line each
$number = 47;

// Check if Even or Odd
if ($number % 2 == 0) {
echo "$number is EVEN<br>";
} else {
echo "$number is ODD<br>";
}

// TODO: Exercise B — your code here
// Divisibility checks
echo ($number % 3 == 0) ? "$number is divisible by 3<br>" : "$number is NOT divisible by 3<br>";
echo ($number % 5 == 0) ? "$number is divisible by 5<br>" : "$number is NOT divisible by 5<br>";
echo ($number % 3 == 0 && $number % 5 == 0) ? "$number is divisible by both 3 and 5<br>" : "$number is NOT divisible by both 3 and 5<br>";


// ══════════════════════════════════════════════════════════════
// EXERCISE C — Comparison Chain
// ══════════════════════════════════════════════════════════════
// Run this code EXACTLY as written.
// Record all six outputs in your report and explain each result.

$x = 10; $y = "10"; $z = 10.0;

var_dump($x == $y); // A: ?
var_dump($x === $y); // B: ?
var_dump($x == $z); // C: ?
var_dump($x === $z); // D: ?
var_dump($y === $z); // E: ?
var_dump($x <=> $y); // F: spaceship — what type? what value?

// Your explanation of each result goes in your PDF report (not here).
echo "<h3>Exercise C Results:</h3>";
var_dump($x == $y); // A: bool(true) - Equality (values match after type juggling)
var_dump($x === $y); // B: bool(false) - Identity (int vs string)
var_dump($x == $z); // C: bool(true) - Equality (values match)
var_dump($x === $z); // D: bool(false) - Identity (int vs float)
var_dump($y === $z); // E: bool(false) - Identity (string vs float)
var_dump($x <=> $y); // F: int(0) - Spaceship operator returns 0 if values are equal


// ══════════════════════════════════════════════════════════════
// EXERCISE D — Null & Default Values
// ══════════════════════════════════════════════════════════════
// Run this code as written, then extend it as instructed below.
echo "<h3>Exercise D Results:</h3>";

$username = null;
$display = $username ?? "Guest";
Expand All @@ -67,4 +77,11 @@
$result = $config_val ?? $env_val ?? $default;
echo "Config: $result<br>";

// TODO: Add one more chained ?? example of your own and explain it in your report.
// Custom chained example: Checking for a user profile picture
$user_upload = null;
$gravatar_url = null;
$placeholder = "default_avatar.png";

$final_image = $user_upload ?? $gravatar_url ?? $placeholder;
echo "Profile Image: $final_image<br>";
?>
139 changes: 93 additions & 46 deletions starter/lab3_task2.php
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* ICS 2371 — Lab 3: Control Structures I
* Task 2: JKUAT Grade Classification System [8 marks]
*
* IMPORTANT: You must complete pseudocode AND flowchart in your PDF
* report BEFORE writing any code below. Marks are awarded for all
* three components: pseudocode, flowchart, and working code.
*
* @author [Your Full Name]
* @student [Your Reg Number, e.g. SCT212-XXXX/2024]
* @author Declan Munene
* @student ENE212-0061/2023
* @lab Lab 3 of 14
* @unit ICS 2371
* @date [Date completed]
* @date April 7, 2026
*/

// ── Test Data Set A (change values to run other test sets) ─────────────────
$name = "Your Name";
$cat1 = 8; // out of 10
$cat2 = 7; // out of 10
$cat3 = 9; // out of 10
$cat4 = 6; // out of 10
$exam = 52; // out of 60

// ── Grade Rules (implement using if-elseif-else, ordered highest first) ────
// A (Distinction): Total >= 70
// B+ (Credit Upper): Total >= 65
// B (Credit Lower): Total >= 60
// C+ (Pass Upper): Total >= 55
// C (Pass Lower): Total >= 50
// D (Marginal Pass): Total >= 40
// E (Fail): Total < 40

// ── Eligibility Rule (implement using nested if) ───────────────────────────
// Must have attended at least 3 of 4 CATs (CAT score > 0 counts as attended)
// AND exam score >= 20
// Otherwise: "DISQUALIFIED — Exam conditions not met"

// ── Supplementary Rule (implement using ternary) ──────────────────────────
// If grade is D: "Eligible for Supplementary Exam"
// Otherwise: "Not eligible for supplementary"
// ── Test Data Set A (Update these values for Sets B, C, D, and E) ──────────
$name = "Declan Munene";
$cat1 = 8;
$cat2 = 7;
$cat3 = 9;
$cat4 = 6;
$exam = 52;

// ── STEP 1: Compute total ─────────────────────────────────────────────────
// TODO: compute $total

$total = $cat1 + $cat2 + $cat3 + $cat4 + $exam;

// ── STEP 2: Count CATs attended ───────────────────────────────────────────
// TODO: compute $cats_attended (each CAT > 0 counts as attended)

$cats_attended = 0;
if ($cat1 > 0) $cats_attended++;
if ($cat2 > 0) $cats_attended++;
if ($cat3 > 0) $cats_attended++;
if ($cat4 > 0) $cats_attended++;

// ── STEP 3: Eligibility check (nested if) ─────────────────────────────────
// TODO: nested if — eligibility → grade classification → supplementary ternary
$eligible = false;
$grade = "N/A";
$desc = "N/A";
$supp_status = "N/A";

if ($cats_attended >= 3 && $exam >= 20) {
$eligible = true;

// Grade classification
if ($total >= 70) {
$grade = "A";
$desc = "Distinction";
} elseif ($total >= 65) {
$grade = "B+";
$desc = "Credit Upper";
} elseif ($total >= 60) {
$grade = "B";
$desc = "Credit Lower";
} elseif ($total >= 55) {
$grade = "C+";
$desc = "Pass Upper";
} elseif ($total >= 50) {
$grade = "C";
$desc = "Pass Lower";
} elseif ($total >= 40) {
$grade = "D";
$desc = "Marginal Pass";
} else {
$grade = "E";
$desc = "Fail";
}

// Supplementary ternary rule
$supp_status = ($grade == "D") ? "Eligible for Supplementary Exam" : "Not eligible for supplementary";

} else {
$eligible = false;
$desc = "DISQUALIFIED — Exam conditions not met";
}

// ── STEP 4: Display formatted HTML report card ────────────────────────────
// TODO: output a clear, formatted report card showing:
// student name, each CAT score, exam score, total,
// cats attended, eligibility status, grade, remark, supplementary status
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>JKUAT Student Report Card</title>
<style>
body { font-family: Arial, sans-serif; margin: 20px; line-height: 1.6; }
.report-card { border: 2px solid #2c3e50; padding: 20px; width: 500px; border-radius: 8px; }
h2 { color: #2c3e50; border-bottom: 2px solid #2c3e50; padding-bottom: 10px; }
.row { display: flex; justify-content: space-between; margin-bottom: 8px; border-bottom: 1px solid #eee; }
.label { font-weight: bold; }
.status-box { margin-top: 15px; padding: 10px; border-radius: 4px; font-weight: bold; text-align: center; }
.eligible { background-color: #d4edda; color: #155724; }
.disqualified { background-color: #f8d7da; color: #721c24; }
</style>
</head>
<body>

<div class="report-card">
<h2>Academic Report Card</h2>
<div class="row"><span class="label">Student Name:</span> <span><?php echo $name; ?></span></div>
<div class="row"><span class="label">CAT Scores:</span> <span><?php echo "$cat1, $cat2, $cat3, $cat4"; ?></span></div>
<div class="row"><span class="label">Exam Score:</span> <span><?php echo $exam; ?> / 60</span></div>
<div class="row"><span class="label">CATs Attended:</span> <span><?php echo $cats_attended; ?> / 4</span></div>
<div class="row"><span class="label">Total Marks:</span> <span><?php echo $total; ?> / 100</span></div>

<?php if ($eligible): ?>
<div class="status-box eligible">
Grade: <?php echo "$grade ($desc)"; ?><br>
<?php echo $supp_status; ?>
</div>
<?php else: ?>
<div class="status-box disqualified">
<?php echo $desc; ?>
</div>
<?php endif; ?>
</div>

// ── Required Test Data Sets — screenshot each ─────────────────────────────
// Set A: cat1=8, cat2=7, cat3=9, cat4=6, exam=52 → expect grade B
// Set B: cat1=9, cat2=8, cat3=0, cat4=9, exam=55 → expect grade A (check cats_attended)
// Set C: cat1=0, cat2=0, cat3=7, cat4=0, exam=48 → expect DISQUALIFIED
// Set D: cat1=5, cat2=4, cat3=6, cat4=3, exam=22 → expect grade D + supp eligible
// Set E: cat1=0, cat2=0, cat3=0, cat4=0, exam=15 → expect DISQUALIFIED
</body>
</html>
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