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feat: lab3 complete - ENE212-0064/2023 #22

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43 changes: 38 additions & 5 deletions starter/lab3_task1.php
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Expand Up @@ -3,11 +3,11 @@
* 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 [Michelle Muthoni Mwangi]
* @student [ENE212-0064/2023]
* @lab Lab 3 of 14
* @unit ICS 2371
* @date [Date completed]
* @date [08/04/2026]
*/

// ══════════════════════════════════════════════════════════════
Expand All @@ -20,7 +20,20 @@
// "Hypothermia Warning" if temp < 36.1
// Test with: 36.8, 39.2, 34.5 — screenshot each

// TODO: Exercise A — your code here
// Exercise A implementation
$temperature = 39.2;

if ($temperature >= 36.1 && $temperature <= 37.5) {
echo "Normal<br>";
}

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

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


// ══════════════════════════════════════════════════════════════
Expand All @@ -30,7 +43,20 @@
// 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

// TODO: Exercise B — your code here
// Exercise B implementation
$number = 47;

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

// 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>";


// ══════════════════════════════════════════════════════════════
Expand Down Expand Up @@ -67,4 +93,11 @@
$result = $config_val ?? $env_val ?? $default;
echo "Config: $result<br>";

// Additional chained null coalescing example
$user_pref = null; // user has not set a preference
$system_pref = "dark"; // system-wide preference
$fallback = "light"; // ultimate fallback
$theme = $user_pref ?? $system_pref ?? $fallback;
echo "Theme: $theme<br>";

// TODO: Add one more chained ?? example of your own and explain it in your report.
113 changes: 68 additions & 45 deletions starter/lab3_task2.php
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* 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 [Michelle Muthoni Mwangi]
* @student [ENE212-0064/2023]
* @lab Lab 3 of 14
* @unit ICS 2371
* @date [Date completed]
* @date [08/04/2026]
*/

// ── 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
// ── Test Data Sets (A–E)
$testSets = [
'Set A' => [
'name' => 'Michelle Muthoni Mwangi',
'cat1' => 8, 'cat2' => 7, 'cat3' => 9, 'cat4' => 6, 'exam' => 52
],
'Set B' => [
'name' => 'Michelle Muthoni Mwangi',
'cat1' => 9, 'cat2' => 8, 'cat3' => 0, 'cat4' => 9, 'exam' => 55
],
'Set C' => [
'name' => 'Michelle Muthoni Mwangi',
'cat1' => 0, 'cat2' => 0, 'cat3' => 7, 'cat4' => 0, 'exam' => 48
],
'Set D' => [
'name' => 'Michelle Muthoni Mwangi',
'cat1' => 5, 'cat2' => 4, 'cat3' => 6, 'cat4' => 3, 'exam' => 22
],
'Set E' => [
'name' => 'Michelle Muthoni Mwangi',
'cat1' => 0, 'cat2' => 0, 'cat3' => 0, 'cat4' => 0, 'exam' => 15
],
];

// ── 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
function generate_report($label, $name, $cat1, $cat2, $cat3, $cat4, $exam) {
// STEP 1
$total = $cat1 + $cat2 + $cat3 + $cat4 + $exam;

// ── 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"
// STEP 2
$cats_attended = 0;
foreach ([$cat1, $cat2, $cat3, $cat4] as $cat) {
if ($cat > 0) $cats_attended++;
}

// ── Supplementary Rule (implement using ternary) ──────────────────────────
// If grade is D: "Eligible for Supplementary Exam"
// Otherwise: "Not eligible for supplementary"
// STEP 3
if ($cats_attended >= 3 && $exam >= 20) {
$eligibility = 'ELIGIBLE';

// ── STEP 1: Compute total ─────────────────────────────────────────────────
// TODO: compute $total
if ($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'; }

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

// ── STEP 2: Count CATs attended ───────────────────────────────────────────
// TODO: compute $cats_attended (each CAT > 0 counts as attended)
} else {
$eligibility = 'DISQUALIFIED — Exam conditions not met';
$grade = 'N/A';
$remark = 'DISQUALIFIED';
$supplementary = 'Not eligible for supplementary';
}

// STEP 4: Output
echo "<hr><h3>$label</h3>";
echo "<strong>Name:</strong> $name<br>";
echo "<strong>CAT1:</strong> $cat1 &nbsp; <strong>CAT2:</strong> $cat2 &nbsp; <strong>CAT3:</strong> $cat3 &nbsp; <strong>CAT4:</strong> $cat4<br>";
echo "<strong>Exam:</strong> $exam<br>";
echo "<strong>Total:</strong> $total<br>";
echo "<strong>CATs attended:</strong> $cats_attended<br>";
echo "<strong>Eligibility:</strong> $eligibility<br>";
echo "<strong>Grade:</strong> $grade<br>";
echo "<strong>Remark:</strong> $remark<br>";
echo "<strong>Supplementary:</strong> $supplementary<br>";
}

// ── STEP 3: Eligibility check (nested if) ─────────────────────────────────
// TODO: nested if — eligibility → grade classification → supplementary ternary


// ── 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


// ── 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
// Run reports for all test sets
foreach ($testSets as $label => $data) {
generate_report($label, $data['name'], $data['cat1'], $data['cat2'], $data['cat3'], $data['cat4'], $data['exam']);
}
?>
79 changes: 71 additions & 8 deletions starter/lab3_task3.php
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Expand Up @@ -3,11 +3,11 @@
* ICS 2371 — Lab 3: Control Structures I
* Task 3: switch-case and match Expression [6 marks]
*
* @author [Your Full Name]
* @student [Your Reg Number, e.g. SCT212-XXXX/2024]
* @author [Michelle Muthoni Mwangi]
* @student [ENE212-0064/2023]
* @lab Lab 3 of 14
* @unit ICS 2371
* @date [Date completed]
* @date [08/04/2026]
*/

// ══════════════════════════════════════════════════════════════
Expand All @@ -21,7 +21,31 @@

$day = 3; // change this to test all cases

// TODO: switch-case for day classifier
// Exercise A: switch-case for day classifier
switch ($day) {
case 1:
echo "Monday — Lecture day<br>";
break;
case 2:
echo "Tuesday — Lecture day<br>";
break;
case 3:
echo "Wednesday — Lecture day<br>";
break;
case 4:
echo "Thursday — Lecture day<br>";
break;
case 5:
echo "Friday — Lecture day<br>";
break;
case 6:
case 7:
echo "Weekend<br>";
break;
default:
echo "Invalid day (must be 1–7)<br>";
break;
}


// ══════════════════════════════════════════════════════════════
Expand All @@ -39,15 +63,54 @@

$status_code = 404;

// TODO: switch-case for HTTP status
// switch-case implementation
switch ($status_code) {
case 200:
$explain = "OK — request succeeded";
break;
case 301:
$explain = "Moved Permanently — resource relocated";
break;
case 400:
$explain = "Bad Request — client error";
break;
case 401:
$explain = "Unauthorized — authentication required";
break;
case 403:
$explain = "Forbidden — access denied";
break;
case 404:
$explain = "Not Found — resource missing";
break;
case 500:
$explain = "Internal Server Error — server fault";
break;
default:
$explain = "Unknown status code";
break;
}

echo "Switch: $status_code -> $explain<br>";


// ══════════════════════════════════════════════════════════════
// EXERCISE C — PHP 8 match Expression
// ══════════════════════════════════════════════════════════════
// Rewrite Exercise B using PHP 8 match instead of switch-case.
// Note: match uses STRICT comparison (===). No break needed.
// Observe the difference in syntax and behaviour.
// Rewrite Exercise B using match (strict comparison)

$explain_match = match ($status_code) {
200 => "OK — request succeeded",
301 => "Moved Permanently — resource relocated",
400 => "Bad Request — client error",
401 => "Unauthorized — authentication required",
403 => "Forbidden — access denied",
404 => "Not Found — resource missing",
500 => "Internal Server Error — server fault",
default => "Unknown status code",
};

echo "Match: $status_code -> $explain_match<br>";

// TODO: match expression for HTTP status — same logic as Exercise B

Expand Down
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