vault backup: 2022-08-08 11:31:31

content/notes/09-intro-to-c-2.md

@@ -34,4 +34,14 @@ names are allocated to emmory locations of declaration
 - changes to the parameter do not propogate to the caller
 
 ## Call by address
-- address of parameter is passed to the rountine
+- address of parameter is passed to the rountine
+- changes do propogate back to the caller
+- more efficient because we only need to pass a pointer and not a value
+
+### Multiple results
+- c routine can return at most one value
+- you can use input parameters which are pointers for "returning" results
+
+### Arrays
+- strings
+-