Kiotolabs · Sentientzombie71 · Apr 2, 2026
diff --git a/starter/lab3_task1.php b/starter/lab3_task1.php
@@ -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     [Collins Njoroge Muchiri]
+ * @student    [ENE212-0059/2023]
  * @lab        Lab 3 of 14
  * @unit       ICS 2371
- * @date       [Date completed]
+ * @date       [Date complete 02/04/2026]
  */
 
 // ══════════════════════════════════════════════════════════════
@@ -23,6 +23,41 @@
 // TODO: Exercise A — your code here
 
 
+// Exercise A: Temperature Check
+
+echo "<h3>Exercise A - Temperature Alert System</h3>";
+
+// Test case 1: 39.2
+$temperature = 39.2;
+$result = "";
+if ($temperature >= 36.1 && $temperature <= 37.5) { $result = "Normal"; }
+if ($temperature > 37.5) { $result = "Fever"; }
+if ($temperature < 36.1) { $result = "Hypothermia Warning"; }
+echo "Temperature: {$temperature}°C - {$result}<br>";
+
+echo "<br>"; 
+
+// Test case 2: 36.8
+$temperature = 36.8;
+$result = "";
+if ($temperature >= 36.1 && $temperature <= 37.5) { $result = "Normal"; }
+if ($temperature > 37.5) { $result = "Fever"; }
+if ($temperature < 36.1) { $result = "Hypothermia Warning"; }
+echo "Temperature: {$temperature}°C - {$result}<br>";
+
+echo "<br>"; 
+
+// Test case 3: 34.5
+$temperature = 34.5;
+$result = "";
+if ($temperature >= 36.1 && $temperature <= 37.5) { $result = "Normal"; }
+if ($temperature > 37.5) { $result = "Fever"; }
+if ($temperature < 36.1) { $result = "Hypothermia Warning"; }
+echo "Temperature: {$temperature}°C - {$result}<br>";
+
+echo "<br><hr><br>"; 
+
+
 // ══════════════════════════════════════════════════════════════
 // EXERCISE B — Even or Odd
 // ══════════════════════════════════════════════════════════════
@@ -32,6 +67,39 @@
 
 // TODO: Exercise B — your code here
 
+// Exercise B
+
+echo "<h3>Exercise B - Even or Odd with Divisibility</h3>";
+
+$number = 47;
+
+// Check if number is even or odd
+if ($number % 2 == 0) {
+    echo "$number is EVEN<br>";
+} else {
+    echo "$number is ODD<br>";
+}
+
+// Check divisibility
+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>";
+}
+
+echo "<br><hr><br>"; 
 
 // ══════════════════════════════════════════════════════════════
 // EXERCISE C — Comparison Chain
@@ -50,21 +118,68 @@
 
 // Your explanation of each result goes in your PDF report (not here).
 
+// Exercise C
+
+echo "<h3>Exercise C - Comparison Operators</h3>";
+
+$x = 10;  $y = "10";  $z = 10.0;
+
+var_dump($x == $y);    // A: True 
+echo "<br>";
+var_dump($x === $y);   // B: False
+echo "<br>";
+var_dump($x == $z);    // C: True 
+echo "<br>";
+var_dump($x === $z);   // D: False
+echo "<br>";
+var_dump($y === $z);   // E: False
+echo "<br>";
+var_dump($x <=> $y);   // F: spaceship — returns 0
+echo "<br>";
+
+echo "<br><hr><br>"; 
 
 // ══════════════════════════════════════════════════════════════
 // EXERCISE D — Null & Default Values
 // ══════════════════════════════════════════════════════════════
 // Run this code as written, then extend it as instructed below.
 
+// Exercise D
+
+echo "<h3>Exercise D - Null Coalescing Operator (??)</h3>";
+
 $username = null;
 $display  = $username ?? "Guest";
 echo "Welcome, $display<br>";
 
 // Chained null coalescing
+
 $config_val = null;
 $env_val    = null;
 $default    = "system_default";
 $result     = $config_val ?? $env_val ?? $default;
 echo "Config: $result<br>";
 
+echo "<br>"; 
+
 // TODO: Add one more chained ?? example of your own and explain it in your report.
+
+
+// Example 1
+$username = "Collins";
+$display = $username ?? "Guest";
+echo "Welcome, $display<br>";
+
+$config_val = "config_value";
+$env_val = "env_value";
+$default = "system_default";
+$result = $config_val ?? $env_val ?? $default;
+echo "Config: $result<br>";
+?>
+
+
+
+
+
+
+
diff --git a/starter/lab3_task2.php b/starter/lab3_task2.php
@@ -7,20 +7,14 @@
  * 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     [Collins Njoroge Muchiri]
+ * @student    [ENE212-0059/2023]
  * @lab        Lab 3 of 14
  * @unit       ICS 2371
- * @date       [Date completed]
+ * @date       [Date complete 02/04/2026]
  */
 
 // ── 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
 
 // ── Grade Rules (implement using if-elseif-else, ordered highest first) ────
 // A  (Distinction):    Total >= 70
@@ -64,3 +58,113 @@
 // 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
+
+// Grade Classification System
+
+echo "<h2>Grade Classification System</h2>";
+
+// DATASET A
+echo "<h3>Student A</h3>";
+$cat1 = 8; $cat2 = 7; $cat3 = 9; $cat4 = 6;
+$exam = 52;
+processStudent($cat1, $cat2, $cat3, $cat4, $exam);
+
+// DATASET B
+echo "<h3>Student B</h3>";
+$cat1 = 9; $cat2 = 8; $cat3 = 0; $cat4 = 9;
+$exam = 55;
+processStudent($cat1, $cat2, $cat3, $cat4, $exam);
+
+// DATASET C
+echo "<h3>Student C</h3>";
+$cat1 = 0; $cat2 = 0; $cat3 = 7; $cat4 = 0;
+$exam = 48;
+processStudent($cat1, $cat2, $cat3, $cat4, $exam);
+
+// DATASET D
+echo "<h3>Student D</h3>";
+$cat1 = 5; $cat2 = 4; $cat3 = 6; $cat4 = 3;
+$exam = 22;
+processStudent($cat1, $cat2, $cat3, $cat4, $exam);
+
+// DATASET E
+echo "<h3>Student E</h3>";
+$cat1 = 0; $cat2 = 0; $cat3 = 0; $cat4 = 0;
+$exam = 15;
+processStudent($cat1, $cat2, $cat3, $cat4, $exam);
+
+function processStudent($cat1, $cat2, $cat3, $cat4, $exam) {
+
+    // Display input values
+   echo "CAT Scores: CAT 1; $cat1, CAT 2; $cat2, CAT 3; $cat3, CAT 4; $cat4<br>";
+    echo "Exam Score: $exam<br>";
+
+
+    // STEP 1: CALCULATE TOTAL MARKS
+    $totalCATs = $cat1 + $cat2 + $cat3 + $cat4;
+    $total = $totalCATs + $exam;
+    echo "Total CATs: $totalCATs<br>";
+    echo "Total Score: $total<br>";
+
+    // STEP 2: VALIDATE CAT SCORES (Count attended CATs where score > 0)
+    $attendedCount = 0;
+    if ($cat1 > 0) $attendedCount++;
+    if ($cat2 > 0) $attendedCount++;
+    if ($cat3 > 0) $attendedCount++;
+    if ($cat4 > 0) $attendedCount++;
+    echo "Attended CATs: $attendedCount<br>";
+
+    // STEP 3: CHECK ELIGIBILITY (ARE ATTENDED CATS ≥ 3 AND EXAM SCORE ≥ 20?)
+    if ($attendedCount >= 3 && $exam >= 20) {
+
+        // STEP 4: GRADING LADDER (if-elseif-else, highest first)
+        if ($total >= 70) {
+            $grade = "A";
+            $description = "DISTINCTION";
+        } elseif ($total >= 65) {
+            $grade = "B+";
+            $description = "CREDIT UPPER";
+        } elseif ($total >= 60) {
+            $grade = "B";
+            $description = "CREDIT LOWER";
+        } elseif ($total >= 55) {
+            $grade = "C+";
+            $description = "PASS UPPER";
+        } elseif ($total >= 50) {
+            $grade = "C";
+            $description = "PASS LOWER";
+        } elseif ($total >= 40) {
+            $grade = "D";
+            $description = "MARGINAL PASS";
+        } else {
+            $grade = "E";
+            $description = "FAIL";
+        }
+
+        // STEP 5: SUPPLEMENTARY CHECK (Ternary operator)
+        $supplementary = ($grade == "D") ? "ELIGIBLE FOR SUPPLEMENTARY EXAM" : "NOT ELIGIBLE FOR SUPPLEMENTARY";
+
+        // STEP 6: OUTPUT TOTAL, GRADE, AND DESCRIPTION
+        echo "<strong>Status: ELIGIBLE</strong><br>";
+        echo "<strong>Grade: $grade - $description</strong><br>";
+        echo "<strong>Supplementary: $supplementary</strong><br>";
+
+    } else {
+        // DISPLAY DISQUALIFIED
+        echo "<strong>DISQUALIFIED — EXAM CONDITIONS NOT MET</strong><br>";
+
+        // Show reason for disqualification
+        echo "Reason: ";
+        if ($attendedCount < 3 && $exam < 20) {
+            echo "Attended only $attendedCount CAT(s) AND Exam score $exam is below 20";
+        } elseif ($attendedCount < 3) {
+            echo "Attended only $attendedCount CAT(s) (need at least 3)";
+        } elseif ($exam < 20) {
+            echo "Exam score $exam is below 20";
+        }
+        echo "<br>";
+    }
+
+    echo "<hr>";
+}
+?>