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feat: lab3 complete - ENE212-0067/2023 #19

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40 changes: 34 additions & 6 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 [MUTWIRI KELVIN MWENDA]
* @student [ENE212-0067/2023]
* @lab Lab 3 of 14
* @unit ICS 2371
* @date [Date completed]
* @date [4TH APRIL 2026]
*/

// ══════════════════════════════════════════════════════════════
Expand All @@ -20,8 +20,17 @@
// "Hypothermia Warning" if temp < 36.1
// Test with: 36.8, 39.2, 34.5 — screenshot each

// TODO: Exercise A — your code here
$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>";
}

// ══════════════════════════════════════════════════════════════
// EXERCISE B — Even or Odd
Expand All @@ -30,7 +39,17 @@
// 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
$number = 47;

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

if ($number % 3 == 0) echo "$number is divisible by 3<br>";
if ($number % 5 == 0) echo "$number is divisible by 5<br>";
if ($number % 3 == 0 && $number % 5 == 0) echo "$number is divisible by both 3 and 5<br>";


// ══════════════════════════════════════════════════════════════
Expand Down Expand Up @@ -67,4 +86,13 @@
$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.
// Extended chained ?? example: Cloudinary API Image Fallback
$cloudinary_api_url = null; // Primary source: API didn't return an image
$local_upload_url = null; // Secondary source: No local file was uploaded
$placeholder_image = "default_avatar.jpg"; // Fallback source

$final_image_to_load = $cloudinary_api_url ?? $local_upload_url ?? $placeholder_image;

echo "Image source to load: $final_image_to_load<br>";

?>
96 changes: 60 additions & 36 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 [MUTWIRI KELVIN MWENDA]
* @student [ENE212-0067/2023]
* @lab Lab 3 of 14
* @unit ICS 2371
* @date [Date completed]
* @date [4TH APRIL 2026]
*/

// ── Test Data Set A (change values to run other test sets) ─────────────────
$name = "Your Name";
$name = "MUTWIRI KELVIN MWENDA";
$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"

// ── 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
if ($cats_attended >= 3 && $exam >= 20) {
$eligibility_status = "Eligible";

// Eligible — determine grade and remark
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";
}
} else {
// Not eligible
$eligibility_status = "Not Eligible";
$grade = "DISQUALIFIED — Exam conditions not met";
$remark = "N/A";
}

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

// ── 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

echo "<h2>JKUAT Grade Report Card</h2>";
echo "<p><strong>Student Name:</strong> $name</p>";
echo "<p><strong>CAT Scores:</strong> $cat1, $cat2, $cat3, $cat4</p>";
echo "<p><strong>Exam Score:</strong> $exam</p>";
echo "<p><strong>Total Score:</strong> $total</p>";
echo "<p><strong>CATs Attended:</strong> $cats_attended</p>";
echo "<p><strong>Eligibility Status:</strong> $eligibility_status</p>";
echo "<p><strong>Grade:</strong> $grade</p>";
echo "<p><strong>Remark:</strong> $remark</p>";
echo "<p><strong>Supplementary Status:</strong> $supplementary_status</p>";

// ── 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
// Set A: cat1=8, cat2=7, cat3=9, cat4=6, exam=52 → expect grade A (Total 82)
// Set B: cat1=9, cat2=8, cat3=0, cat4=9, exam=55 → expect grade A (Total 81, eligible)
// Set C: cat1=0, cat2=0, cat3=7, cat4=0, exam=48 → expect DISQUALIFIED (Only 1 CAT)
// Set D: cat1=5, cat2=4, cat3=6, cat4=3, exam=22 → expect grade D + supp eligible (Total 40)
// Set E: cat1=0, cat2=0, cat3=0, cat4=0, exam=15 → expect DISQUALIFIED (0 CATs, exam < 20)
?>
91 changes: 66 additions & 25 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 [MUTWIRI KELVIN MWENDA]
* @student [ENE212-0067/2023]
* @lab Lab 3 of 14
* @unit ICS 2371
* @date [Date completed]
* @date [4TH APRIL 2026]
*/

// ══════════════════════════════════════════════════════════════
Expand All @@ -17,45 +17,86 @@
// Use switch-case to print the day name.
// Group Saturday and Sunday under "Weekend".
// All weekdays print their name and "— Lecture day".
// Remember: break is NOT optional. Missing break = fall-through.

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

// TODO: switch-case for day classifier

switch ($day) {
case 1:
echo "Monday — Lecture day";
break;
case 2:
echo "Tuesday — Lecture day";
break;
case 3:
echo "Wednesday — Lecture day";
break;
case 4:
echo "Thursday — Lecture day";
break;
case 5:
echo "Friday — Lecture day";
break;
case 6:
case 7:
echo "Weekend";
break;
default:
echo "Invalid day";
}
echo "<br>";

// ══════════════════════════════════════════════════════════════
// EXERCISE B — HTTP Status Code Explainer
// ══════════════════════════════════════════════════════════════
// Given $status_code, use switch-case to explain it:
// 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"

$status_code = 404;

// TODO: switch-case for HTTP status

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

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

$message = match ($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 $message . "<br>";

// ══════════════════════════════════════════════════════════════
// EXERCISE D — Rewrite comparison
// EXERCISE D — Rewrite comparison (To be answered in PDF report)
// ══════════════════════════════════════════════════════════════
// In your PDF report, answer:
// 1. What is the key difference between switch (==) and match (===)?
// 2. Give one example where this difference changes the output.
// 3. When would you prefer switch over match, and why?
?>
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