Merge pull request #1075 from flaviut/inlinedocs

Add some documentations and code examples in system

tests/misc/tack.nim

@@ -0,0 +1,21 @@
+discard """
+  file: "tack.nim"
+  output: "125"
+"""
+# the Ackermann function
+
+proc ack(x, y: int): int =
+  if x != 0:
+    if y != 0:
+      return ack(x-1, ack(x, y-1))
+    return ack(x-1, 1)
+  else:
+    return y + 1
+#  if x == 0: return y + 1
+#  elif y == 0: return ack(x-1, 1)
+#  else: return ack(x-1, ack(x, y-1))
+
+# echo(ack(0, 0))
+write(stdout, ack(3, 4)) #OUT 125
+
+