diff --git a/education/software development/ECE1400/Chapter 15 Exercises.md b/education/software development/ECE1400/Chapter 15 Exercises.md
index 71f2c06..ad32e50 100644
--- a/education/software development/ECE1400/Chapter 15 Exercises.md	
+++ b/education/software development/ECE1400/Chapter 15 Exercises.md	
@@ -19,5 +19,6 @@ Yes, `""` is a path relative to the current file, whereas `<>` is a path to the
 > **4.** Assume that `debug.h` is a header file with the following contents...
 >(a). What is the output when the program is executed?
 ```
-
+Output if DEBUG is defined:\n
+Value of " #n"
 ```
\ No newline at end of file