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feat: lab3 complete - ENE212-0071/2023 #6

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90 changes: 66 additions & 24 deletions starter/lab3_task1.php
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Expand Up @@ -3,58 +3,91 @@
* 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 [Joshua Mativo]
* @student [ENE212-0071/2023]
* @lab Lab 3 of 14
* @unit ICS 2371
* @date [Date completed]
* @date [2/4/2026]
*/

echo "<h2>Task 1 — Warm-Up Exercises</h2>";
echo "<hr>";

// ══════════════════════════════════════════════════════════════
// 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
echo "<h3>Exercise A — Temperature Alert System</h3>";

$temperature = 34.5; // change to 36.8 and 34.5 for other test screenshots

// TODO: Exercise A — your code here
echo "Temperature: {$temperature}°C &nbsp;→&nbsp; ";

if ($temperature >= 36.1 && $temperature <= 37.5) {
echo "<strong>Normal</strong>";
}
if ($temperature > 37.5) {
echo "<strong style='color:red;'>Fever</strong>";
}
if ($temperature < 36.1) {
echo "<strong style='color:blue;'>Hypothermia Warning</strong>";
}
echo "<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
echo "<h3>Exercise B — Even or Odd</h3>";

$number = 47;

// TODO: Exercise B — your code here
if ($number % 2 === 0) {
echo "$number is <strong>EVEN</strong><br>";
} else {
echo "$number is <strong>ODD</strong><br>";
}

// Divisibility checks
if ($number % 3 === 0) {
echo "$number is divisible by 3<br>";
} else {
echo "$number is NOT divisible by 3<br>";
}

if ($number % 5 === 0) {
echo "$number is divisible by 5<br>";
} else {
echo "$number is NOT divisible by 5<br>";
}

if ($number % 3 === 0 && $number % 5 === 0) {
echo "$number is divisible by both 3 and 5<br>";
} else {
echo "$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.
echo "<h3>Exercise C — Comparison Chain</h3>";
echo "<pre>";

$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?
echo "x = 10 (int), y = \"10\" (string), z = 10.0 (float)\n\n";

// Your explanation of each result goes in your PDF report (not here).
echo "A: var_dump(\$x == \$y) → "; var_dump($x == $y); // bool(true)
echo "B: var_dump(\$x === \$y) → "; var_dump($x === $y); // bool(false)
echo "C: var_dump(\$x == \$z) → "; var_dump($x == $z); // bool(true)
echo "D: var_dump(\$x === \$z) → "; var_dump($x === $z); // bool(false)
echo "E: var_dump(\$y === \$z) → "; var_dump($y === $z); // bool(false)
echo "F: var_dump(\$x <=> \$y) → "; var_dump($x <=> $y); // int(0)

echo "</pre>";

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

$username = null;
$display = $username ?? "Guest";
Expand All @@ -68,3 +101,12 @@
echo "Config: $result<br>";

// TODO: Add one more chained ?? example of your own and explain it in your report.
// Custom example — simulating a user profile with fallback display name
$db_name = null; // not found in database
$session_name = null; // not set in session
$cookie_name = "Alice"; // found in cookie
$fallback = "Anonymous";

$display_name = $db_name ?? $session_name ?? $cookie_name ?? $fallback;
echo "Display name (db → session → cookie → fallback): <strong>$display_name</strong><br>";
echo "<small>Explanation: \$db_name and \$session_name are null, so PHP falls through to \$cookie_name = 'Alice'.</small><br>";
99 changes: 82 additions & 17 deletions starter/lab3_task2.php
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Expand Up @@ -7,20 +7,23 @@
* 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 [Joshua Mativo]
* @student [ENE212-0071/2023]
* @lab Lab 3 of 14
* @unit ICS 2371
* @date [Date completed]
* @date [2/4/2026]
*/

echo "<h2>Task 2 — JKUAT Grade Classification System</h2>";
echo "<hr>";

// ── 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
$cat1 = 0; // out of 10
$cat2 = 0; // out of 10
$cat3 = 0; // out of 10
$cat4 = 0; // out of 10
$exam = 15; // out of 60

// ── Grade Rules (implement using if-elseif-else, ordered highest first) ────
// A (Distinction): Total >= 70
Expand All @@ -41,23 +44,85 @@
// Otherwise: "Not eligible for supplementary"

// ── 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
$eligibility = "";
$grade = "";
$remark = "";
$supplementary = "";

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

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

$eligibility = "ELIGIBLE";

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

} else {
$eligibility = "DISQUALIFIED — Exam conditions not met";
$grade = "N/A";
$remark = "N/A";
$supplementary = "N/A";
}

// ── STEP 4: Display formatted HTML report card ────────────────────────────
$eligible_color = str_starts_with($eligibility, "DISQ") ? "#c0392b" : "#27ae60";
?>
<div style="font-family:Arial;max-width:480px;border:2px solid #2E75B6;border-radius:8px;padding:20px;margin:20px auto;">
<h3 style="color:#1F3864;text-align:center;margin:0 0 12px;">JKUAT Grade Report Card</h3>
<hr style="border-color:#2E75B6;">
<table style="width:100%;border-collapse:collapse;font-size:14px;">
<tr><td><b>Student:</b></td><td><?= htmlspecialchars($name) ?></td></tr>
<tr><td><b>CAT 1:</b></td><td><?= $cat1 ?> / 10</td></tr>
<tr><td><b>CAT 2:</b></td><td><?= $cat2 ?> / 10</td></tr>
<tr><td><b>CAT 3:</b></td><td><?= $cat3 ?> / 10</td></tr>
<tr><td><b>CAT 4:</b></td><td><?= $cat4 ?> / 10</td></tr>
<tr><td><b>Final Exam:</b></td><td><?= $exam ?> / 60</td></tr>
<tr><td><b>Total:</b></td><td><?= $total ?> / 100</td></tr>
<tr><td><b>CATs Attended:</b></td><td><?= $cats_attended ?> of 4</td></tr>
<tr><td><b>Status:</b></td>
<td style="color:<?= $eligible_color ?>;font-weight:bold;"><?= $eligibility ?></td></tr>
<tr><td><b>Grade:</b></td><td style="font-size:1.3em;color:#2E75B6;"><b><?= $grade ?></b></td></tr>
<tr><td><b>Remark:</b></td><td><?= $remark ?></td></tr>
<tr><td><b>Supplementary:</b></td><td><?= $supplementary ?></td></tr>
</table>
</div>

<?php
// ── 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)
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