Added nested loop example and some more comment in other examples.

examples/nested_loops.fun

@@ -0,0 +1,64 @@
+// Nested loops: break and continue behavior
+
+// 1) Nested for range: inner continue on j==2, inner break on j==4, outer break on i==3
+for i in range(0, 5)
+  for j in range(0, 5)
+    if j == 2
+      continue            // skip j==2
+    if j == 4
+      break               // stop inner loop at j==4
+    print(i * 10 + j)     // e.g., i=0 -> 0, 1, 3
+  if i == 3
+    break                 // stop outer loop when i==3
+
+// 2) Nested for-in over arrays: skip even values, break inner when hitting 7
+rows = [[1, 2, 3], [4, 5], [6, 7, 8, 9]]    
+for row in rows
+  for v in row
+    if v % 2 == 0
+      continue            // skip even numbers
+    print(v)              // prints odd numbers in each row
+    if v == 7
+      break               // stop inner loop when reaching 7
+
+// 3) Nested while loops: inner continue/break and regular increments
+number i = 0
+while i < 3
+  number k = 0
+  while k < 5
+    if k == 1
+      k = k + 1
+      continue            // skip k==1
+    print(i * 100 + k)
+    if k == 3
+      break               // exit inner loop at k==3
+    k = k + 1
+  i = i + 1
+
+/* Expected output:
+0
+1
+3
+10
+11
+13
+20
+21
+23
+30
+31
+33
+1
+3
+5
+7
+0
+2
+3
+100
+102
+103
+200
+202
+203
+*/