diff --git a/starter/lab3_task1.php b/starter/lab3_task1.php
index f396a7e..e0f2f10 100644
--- a/starter/lab3_task1.php
+++ b/starter/lab3_task1.php
@@ -1,70 +1,105 @@
-<?php
-/**
- * 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]
- * @lab        Lab 3 of 14
- * @unit       ICS 2371
- * @date       [Date completed]
- */
-
-// ══════════════════════════════════════════════════════════════
-// 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
-
-// TODO: Exercise A — your code here
-
-
-// ══════════════════════════════════════════════════════════════
-// EXERCISE B — Even or Odd
-// ══════════════════════════════════════════════════════════════
-// Declare $number = 47
-// Use if-else to print "$number is EVEN" or "$number is ODD"
-// Also check divisibility by 3, by 5, and by both 3 and 5 — one line each
-
-// TODO: Exercise B — your code here
-
-
-// ══════════════════════════════════════════════════════════════
-// EXERCISE C — Comparison Chain
-// ══════════════════════════════════════════════════════════════
-// Run this code EXACTLY as written.
-// Record all six outputs in your report and explain each result.
-
-$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 <=> $y);  // F: spaceship — what type? what value?
-
-// Your explanation of each result goes in your PDF report (not here).
-
-
-// ══════════════════════════════════════════════════════════════
-// EXERCISE D — Null & Default Values
-// ══════════════════════════════════════════════════════════════
-// Run this code as written, then extend it as instructed below.
-
-$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>";
-
-// TODO: Add one more chained ?? example of your own and explain it in your report.
+<?php
+/**
+ * ICS 2371 — Lab 3: Control Structures I
+ * Task 1: Simple if and if-else — Warm-Up Exercises [5 marks]
+ *
+ * @author     Johnray Mwendwa
+ * @student    ENE212-0070/2022
+ * @lab        Lab 3 of 14
+ * @unit       ICS 2371
+ * @date       06/04/2026
+ */
+
+// ══════════════════════════════════════════════════════════════
+// EXERCISE A — Temperature Alert System
+// ══════════════════════════════════════════════════════════════
+// Declare $temperature = 39.2
+// Use separate if statements (not if-else) to print:
+//   "Normal"            if temp is between 36.1 and 37.5 inclusive
+//   "Fever"             if temp > 37.5
+//   "Hypothermia Warning" if temp < 36.1
+// Test with: 36.8, 39.2, 34.5 — screenshot each
+
+// TODO: Exercise A — your code here
+$temperature = 39.2;
+echo "Test temperature: $temperature \n";
+
+if ($temperature >= 36.1 && $temperature <= 37.5) {
+    echo "Result:Normal \n";
+}
+if ($temperature > 37.5) {
+    echo "Result:Fever \n";
+}
+if ($temperature < 36.1) {
+    echo "Result:Hypothermia Warning \n";
+}
+//line break 
+echo "\n";
+
+
+// ══════════════════════════════════════════════════════════════
+// EXERCISE B — Even or Odd
+// ══════════════════════════════════════════════════════════════
+// Declare $number = 47
+// Use if-else to print "$number is EVEN" or "$number is ODD"
+// Also check divisibility by 3, by 5, and by both 3 and 5 — one line each
+
+// TODO: Exercise B — your code here
+$number = 47;
+if ($number % 2 == 0) {
+    echo "$number is EVEN";
+} else {
+    echo "$number is ODD";
+}
+
+//fizzbuzz type of problem
+if ($number % 3 == 0) {
+    echo "$number is divisible by 3";
+}
+if ($number % 5 == 0) {
+    echo "$number is divisible by 5";
+}
+if ($number % 3 == 0 && $number % 5 == 0) {
+    echo "$number is divisible by both 3 and 5";
+}
+
+
+// ══════════════════════════════════════════════════════════════
+// 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 == $y);   // A: boolean true — because == does type juggling and considers 10 and "10" equal
+var_dump($x === $y);  // B: boolean false — because === checks for both value and type, and 10 (integer) is not the same type as "10" (string)
+var_dump($x == $z);   // C: boolean true — because == does type juggling and considers 10 and 10.0 equal (both are numeric and have the same value)
+var_dump($x === $z);  // D: boolean false — because === checks for both value and type, and 10 (integer) is not the same type as 10.0 (float)
+var_dump($y === $z);  // E: boolean false — because === checks for both value and type, and "10" (string) is not the same type as 10.0 (float)
+var_dump($x <=> $y);  // F: int(0) — because the spaceship operator <=> returns 0 when the two operands are equal in value (after type juggling)
+
+// Your explanation of each result goes in your PDF report (not here).
+
+
+// ══════════════════════════════════════════════════════════════
+// EXERCISE D — Null & Default Values
+// ══════════════════════════════════════════════════════════════
+// Run this code as written, then extend it as instructed below.
+
+$username = null;
+$display  = $username ?? "Guest";
+echo "Welcome, $display<br>";
+
+
+$config_val = null;
+$env_val    = null;
+$default    = "system_default";
+$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_val = null;
+$result2 = $custom_val ?? $env_val ?? $default;
+echo "Custom: $result2<br>";
+
diff --git a/starter/lab3_task2.php b/starter/lab3_task2.php
index b03e13c..08116f2 100644
--- a/starter/lab3_task2.php
+++ b/starter/lab3_task2.php
@@ -1,66 +1,109 @@
-<?php
-/**
- * ICS 2371 — Lab 3: Control Structures I
- * Task 2: JKUAT Grade Classification System [8 marks]
- *
- * IMPORTANT: You must complete pseudocode AND flowchart in your PDF
- * report BEFORE writing any code below. Marks are awarded for all
- * three components: pseudocode, flowchart, and working code.
- *
- * @author     [Your Full Name]
- * @student    [Your Reg Number, e.g. SCT212-XXXX/2024]
- * @lab        Lab 3 of 14
- * @unit       ICS 2371
- * @date       [Date completed]
- */
-
-// ── Test Data Set A (change values to run other test sets) ─────────────────
-$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"
-
-// ── STEP 1: Compute total ─────────────────────────────────────────────────
-// TODO: compute $total
-
-
-// ── STEP 2: Count CATs attended ───────────────────────────────────────────
-// TODO: compute $cats_attended (each CAT > 0 counts as attended)
-
-
-// ── STEP 3: Eligibility check (nested if) ─────────────────────────────────
-// TODO: nested if — eligibility → grade classification → supplementary ternary
-
-
-// ── STEP 4: Display formatted HTML report card ────────────────────────────
-// TODO: output a clear, formatted report card showing:
-//       student name, each CAT score, exam score, total,
-//       cats attended, eligibility status, grade, remark, supplementary status
-
-
-// ── Required Test Data Sets — screenshot each ─────────────────────────────
-// Set A: cat1=8, cat2=7, cat3=9, cat4=6,  exam=52  → expect grade B
-// Set B: cat1=9, cat2=8, cat3=0, cat4=9,  exam=55  → expect grade A (check cats_attended)
-// Set C: cat1=0, cat2=0, cat3=7, cat4=0,  exam=48  → expect DISQUALIFIED
-// Set D: cat1=5, cat2=4, cat3=6, cat4=3,  exam=22  → expect grade D + supp eligible
-// Set E: cat1=0, cat2=0, cat3=0, cat4=0,  exam=15  → expect DISQUALIFIED
+<?php
+/**
+ * ICS 2371 — Lab 3: Control Structures I
+ * Task 2: JKUAT Grade Classification System [8 marks]
+ *
+ * IMPORTANT: You must complete pseudocode AND flowchart in your PDF
+ * report BEFORE writing any code below. Marks are awarded for all
+ * three components: pseudocode, flowchart, and working code.
+ *
+ * @author     Johnray Mwendwa
+ * @student    ENE212-0070/2022
+ * @lab        Lab 3 of 14
+ * @unit       ICS 2371
+ * @date       06/04/2026
+ */
+
+// ── Test Data Set A (change values to run other test sets) ─────────────────
+$name  = "Johnray Mwendwa";
+$cat1  = 0;  // out of 10
+$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
+// 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 && $exam >= 20) {
+    // eligible — now determine grade
+    if ($total >= 70) {
+        $grade = "A (Distinction)";
+    } elseif ($total >= 65) {
+        $grade = "B+ (Credit Upper)";
+    } elseif ($total >= 60) {
+        $grade = "B (Credit Lower)";
+    } elseif ($total >= 55) {
+        $grade = "C+ (Pass Upper)";
+    } elseif ($total >= 50) {
+        $grade = "C (Pass Lower)";
+    } elseif ($total >= 40) {
+        $grade = "D (Marginal Pass)";
+    } else {
+        $grade = "E (Fail)";
+    }
+} else {
+    // not eligible
+    $grade = "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
+echo "<h2>Report Card</h2>";
+echo "<p>Student Name: $name</p>";
+echo "<p>CAT 1: $cat1</p>";
+echo "<p>CAT 2: $cat2</p>";
+echo "<p>CAT 3: $cat3</p>";
+echo "<p>CAT 4: $cat4</p>";
+echo "<p>Exam: $exam</p>";
+echo "<p>Total: $total</p>";
+echo "<p>CATs Attended: $cats_attended</p>";
+echo "<p>Eligibility Status: " . ($cats_attended >= 3 && $exam >= 20 ? "Eligible" : "DISQUALIFIED") . "</p>";
+echo "<p>Grade: $grade</p>";
+echo "<p>Remark: " . ($grade == "E (Fail)" ? "Needs Improvement" : "Well Done") . "</p>";
+echo "<p>Supplementary Status: " . ($grade == "D (Marginal Pass)" ? "Eligible for Supplementary Exam" : "Not eligible for supplementary") . "</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
diff --git a/starter/lab3_task3.php b/starter/lab3_task3.php
index d9e00c8..a2337cf 100644
--- a/starter/lab3_task3.php
+++ b/starter/lab3_task3.php
@@ -1,61 +1,125 @@
-<?php
-/**
- * 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]
- * @lab        Lab 3 of 14
- * @unit       ICS 2371
- * @date       [Date completed]
- */
-
-// ══════════════════════════════════════════════════════════════
-// EXERCISE A — Day of Week Classifier
-// ══════════════════════════════════════════════════════════════
-// Given $day (integer 1–7, where 1=Monday):
-// Use switch-case to print the day name.
-// Group Saturday and Sunday under "Weekend".
-// All weekdays print their name and "— Lecture day".
-// Remember: break is NOT optional. Missing break = fall-through.
-
-$day = 3; // change this to test all cases
-
-// TODO: switch-case for day classifier
-
-
-// ══════════════════════════════════════════════════════════════
-// 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
-
-
-// ══════════════════════════════════════════════════════════════
-// 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
-
-
-// ══════════════════════════════════════════════════════════════
-// EXERCISE D — Rewrite comparison
-// ══════════════════════════════════════════════════════════════
-// 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?
+<?php
+/**
+ * ICS 2371 — Lab 3: Control Structures I
+ * Task 3: switch-case and match Expression [6 marks]
+ *
+ * @author     Johnray Mwendwa
+ * @student    ENE212-0070/2022
+ * @lab        Lab 3 of 14
+ * @unit       ICS 2371
+ * @date       06/04/2026
+ */
+
+// ══════════════════════════════════════════════════════════════
+// EXERCISE A — Day of Week Classifier
+// ══════════════════════════════════════════════════════════════
+// Given $day (integer 1–7, where 1=Monday):
+// Use switch-case to print the day name.
+// Group Saturday and Sunday under "Weekend".
+// All weekdays print their name and "— Lecture day".
+// Remember: break is NOT optional. Missing break = fall-through.
+
+echo "EXERCISE A — Day of Week Classifier:\n";
+$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:
+        echo "Saturday — Weekend";
+        break;
+    case 7:
+        echo "Sunday — Weekend";
+        break;
+    default:
+        echo "Invalid day";
+}
+echo "\n";
+
+// ══════════════════════════════════════════════════════════════
+// EXERCISE B — HTTP Status Code Explainer
+// ══════════════════════════════════════════════════════════════
+// Given $status_code, use switch-case to explain it:
+//   200 → "OK — request succeeded"
+//   301 → "Moved Permanently — resource relocated"
+//   400 → "Bad Request — client error"
+//   401 → "Unauthorized — authentication required"
+//   403 → "Forbidden — access denied"
+//   404 → "Not Found — resource missing"
+//   500 → "Internal Server Error — server fault"
+// default → "Unknown status code"
+
+echo "EXERCISE B — HTTP Status Code Explainer:\n";
+$status_code = "500";
+
+// TODO: switch-case for HTTP status
+switch ($status_code) {
+    case 200:
+        echo "OK — request succeeded";
+        break;
+    case 301:
+        echo "Moved Permanently — resource relocated";
+        break;
+    case 400:
+        echo "Bad Request — client error";
+        break;
+    case 401:
+        echo "Unauthorized — authentication required";
+        break;
+    case 403:
+        echo "Forbidden — access denied";
+        break;
+    case 404:
+        echo "Not Found — resource missing";
+        break;
+    case 500:
+        echo "Internal Server Error — server fault";
+        break;
+    default:
+        echo "Unknown status code";
+}
+
+
+// ══════════════════════════════════════════════════════════════
+// EXERCISE C — PHP 8 match Expression
+// ══════════════════════════════════════════════════════════════
+// Rewrite Exercise B using PHP 8 match instead of switch-case.
+// Note: match uses STRICT comparison (===). No break needed.
+// Observe the difference in syntax and behaviour.
+
+echo "\nEXERCISE C — PHP 8 match Expression:\n";
+
+$result = 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 $result . "\n";
+// ══════════════════════════════════════════════════════════════
+// EXERCISE D — Rewrite comparison
+// ══════════════════════════════════════════════════════════════
+// 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?
diff --git a/starter/lab3_task4.php b/starter/lab3_task4.php
index 2a3d225..5779da7 100644
--- a/starter/lab3_task4.php
+++ b/starter/lab3_task4.php
@@ -1,59 +1,81 @@
-<?php
-/**
- * ICS 2371 — Lab 3: Control Structures I
- * Task 4: Nested Conditions — Loan Eligibility Checker [6 marks]
- *
- * IMPORTANT: You must complete pseudocode AND flowchart in your PDF
- * report BEFORE writing any code below.
- *
- * @author     [Your Full Name]
- * @student    [Your Reg Number, e.g. SCT212-XXXX/2024]
- * @lab        Lab 3 of 14
- * @unit       ICS 2371
- * @date       [Date completed]
- */
-
-// ── Problem: Student Loan Eligibility System ───────────────────────────────
-//
-// A student applies for a HELB loan. Eligibility rules (nested):
-//
-// OUTER CHECK — Is the student enrolled?
-//   $enrolled = true/false
-//   If NOT enrolled → "Not eligible — must be an active student"
-//
-// INNER CHECK 1 — GPA requirement (if enrolled)
-//   $gpa (float, 0.0–4.0)
-//   GPA >= 2.0 → proceed to inner check 2
-//   GPA < 2.0  → "Not eligible — GPA below minimum (2.0)"
-//
-// INNER CHECK 2 — Household income bracket (if enrolled AND GPA >= 2.0)
-//   $annual_income (KES)
-//   < 100000   → "Eligible — Full loan award"
-//   < 250000   → "Eligible — Partial loan (75%)"
-//   < 500000   → "Eligible — Partial loan (50%)"
-//   >= 500000  → "Not eligible — household income exceeds threshold"
-//
-// ADDITIONAL RULE — Ternary for renewal vs new application:
-//   $previous_loan = true/false
-//   If eligible: use ternary to append "| Renewal application" or "| New application"
-
-// ── Test data (change to test all branches) ───────────────────────────────
-$enrolled       = true;
-$gpa            = 3.1;
-$annual_income  = 180000;
-$previous_loan  = false;
-
-// ── STEP 1: Outer enrollment check ────────────────────────────────────────
-// TODO: nested if structure implementing all rules above
-
-
-// ── STEP 2: Display result ────────────────────────────────────────────────
-// TODO: output formatted result showing all input values and the decision
-
-
-// ── Required Test Data Sets — screenshot each ─────────────────────────────
-// Set A: enrolled=true,  gpa=3.1, income=180000,  previous=false → Partial 75%
-// Set B: enrolled=true,  gpa=1.8, income=80000,   previous=false → GPA fail
-// Set C: enrolled=false, gpa=3.5, income=60000,   previous=true  → Not enrolled
-// Set D: enrolled=true,  gpa=2.5, income=600000,  previous=true  → Income fail
-// Set E: enrolled=true,  gpa=2.0, income=50000,   previous=true  → Full | Renewal
+<?php
+/**
+ * ICS 2371 — Lab 3: Control Structures I
+ * Task 4: Nested Conditions — Loan Eligibility Checker [6 marks]
+ *
+ * IMPORTANT: You must complete pseudocode AND flowchart in your PDF
+ * report BEFORE writing any code below.
+ *
+ * @author     Johnray Mwendwa
+ * @student    ENE212-0070/2022
+ * @lab        Lab 3 of 14
+ * @unit       ICS 2371
+ * @date       06/04/2026
+ */
+
+// ── Problem: Student Loan Eligibility System ───────────────────────────────
+//
+// A student applies for a HELB loan. Eligibility rules (nested):
+//
+// OUTER CHECK — Is the student enrolled?
+//   $enrolled = true/false
+//   If NOT enrolled → "Not eligible — must be an active student"
+//
+// INNER CHECK 1 — GPA requirement (if enrolled)
+//   $gpa (float, 0.0–4.0)
+//   GPA >= 2.0 → proceed to inner check 2
+//   GPA < 2.0  → "Not eligible — GPA below minimum (2.0)"
+//
+// INNER CHECK 2 — Household income bracket (if enrolled AND GPA >= 2.0)
+//   $annual_income (KES)
+//   < 100000   → "Eligible — Full loan award"
+//   < 250000   → "Eligible — Partial loan (75%)"
+//   < 500000   → "Eligible — Partial loan (50%)"
+//   >= 500000  → "Not eligible — household income exceeds threshold"
+//
+// ADDITIONAL RULE — Ternary for renewal vs new application:
+//   $previous_loan = true/false
+//   If eligible: use ternary to append "| Renewal application" or "| New application"
+
+// ── Test data (change to test all branches) ───────────────────────────────
+$enrolled       = true;
+$gpa            = 2.0;
+$annual_income  = 50000;
+$previous_loan  = true;
+$decision        = ""; // to store final decision message
+
+// ── STEP 1: Outer enrollment check ────────────────────────────────────────
+// TODO: nested if structure implementing all rules above
+if (!$enrolled) {
+    $decision = "Not eligible — must be an active student";
+} else {
+    if ($gpa < 2.0) {
+        $decision = "Not eligible — GPA below minimum (2.0)";
+    } else {
+        if ($annual_income < 100000) {
+            $decision = "Eligible — Full loan award";
+        } elseif ($annual_income < 250000) {
+            $decision = "Eligible — Partial loan (75%)";
+        } elseif ($annual_income < 500000) {
+            $decision = "Eligible — Partial loan (50%)";
+        } else {
+            $decision = "Not eligible — household income exceeds threshold";
+        }
+    }
+}
+
+// ── STEP 2: Display result ────────────────────────────────────────────────
+// TODO: output formatted result showing all input values and the decision
+echo "Loan Application Result:\n";
+echo "Enrolled: " . ($enrolled ? "Yes" : "No") . "\n";
+echo "GPA: " . $gpa . "\n";
+echo "Annual Income: " . $annual_income . "\n";
+echo "Previous Loan: " . ($previous_loan ? "Yes" : "No") . "\n";
+echo "Decision: " . $decision . "\n";
+
+// ── Required Test Data Sets — screenshot each ─────────────────────────────
+// Set A: enrolled=true,  gpa=3.1, income=180000,  previous=false → Partial 75%
+// Set B: enrolled=true,  gpa=1.8, income=80000,   previous=false → GPA fail
+// Set C: enrolled=false, gpa=3.5, income=60000,   previous=true  → Not enrolled
+// Set D: enrolled=true,  gpa=2.5, income=600000,  previous=true  → Income fail
+// Set E: enrolled=true,  gpa=2.0, income=50000,   previous=true  → Full | Renewal