feat: lab3 complete - ENE212-0070/2022

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>";
+

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