From 5fee60ba7b5dc5ada0a01b199a114d5b6cf15c0d Mon Sep 17 00:00:00 2001
From: zleyyij <75810274+zleyyij@users.noreply.github.com>
Date: Sun, 10 Nov 2024 21:01:06 -0700
Subject: [PATCH] vault backup: 2024-11-10 21:01:06

---
 .../software development/ECE1400/Chapter 15 Exercises.md    | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/education/software development/ECE1400/Chapter 15 Exercises.md b/education/software development/ECE1400/Chapter 15 Exercises.md
index ef5a070..cbd6ac6 100644
--- a/education/software development/ECE1400/Chapter 15 Exercises.md	
+++ b/education/software development/ECE1400/Chapter 15 Exercises.md	
@@ -35,4 +35,8 @@ Output if DEBUG is not defined:
 
 > (c). Explain why the output is different in parts (a) and (b)
 
-When `DEBUG` is defined, any instances of the `PRINT_DEBUG` token are replaced with a `printf` call during compile time, but when it's not defined, they're replaced with nothing.
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+When `DEBUG` is defined, any instances of the `PRINT_DEBUG` token are replaced with a `printf` call during compile time, but when it's not defined, they're replaced with nothing.
+
+> (d). Is it necessary for the `DEBUG` macro to be defined *before* `debug.h` is included in order for `PRINT_DEBUG` to have the desired effect? Justify your answer.
+
+Macro invocations are evaluated sequentially, and so if `DEBUG` was defined after `PRINT_DEBUG`, then any usages of `PRINT_EVALUATION` would be have like `DEBUG` was not defined.
\ No newline at end of file