Implemented length storage of allocated memory

examples/thread/thread.q

@@ -1,3 +1,4 @@
+import io
 import sys
 import thread
 import time
@@ -10,8 +11,8 @@ main() {
 }
 
 work() {
-	sys.write(1, "[ ] start\n", 10)
+	io.out("[ ] start\n")
 	time.sleep(10 * 1000 * 1000)
-	sys.write(1, "[x] end\n", 8)
+	io.out("[x] end\n")
 	sys.exit(0)
 }