diff --git a/education/software development/ECE1400/C.md b/education/software development/ECE1400/C.md
index 12c4357..7df84ae 100644
--- a/education/software development/ECE1400/C.md	
+++ b/education/software development/ECE1400/C.md	
@@ -81,4 +81,8 @@ It will continue to read until it reaches a nondigit (whitespace is not skipped
 
 When asked to read a float, `scanf` searches for one of:
 - A plus sign or minus sign
-- A series of digits (possibly containing a decimal point), followed by an exponent (optional). An exponent consists of the letter `e` or `E`
\ No newline at end of file
+- A series of digits (possibly containing a decimal point), followed by an exponent (optional). An exponent consists of the letter `e` or `E`, an optional sign, and one or more digits.
+`%e`, `%f`, and `%g` all follow the same rules for recognizing floating point numbers. 
+
+If an ordinary character is included in the pattern matching string, it will be matched then discarded before proceeding to the next character.
+
diff --git a/education/software development/ECE1400/Chapter 3 Exercises.md b/education/software development/ECE1400/Chapter 3 Exercises.md
index a1031e5..43e7b1e 100644
--- a/education/software development/ECE1400/Chapter 3 Exercises.md	
+++ b/education/software development/ECE1400/Chapter 3 Exercises.md	
@@ -18,3 +18,13 @@ printf("%-6.0f", x);
 ```
 
 # 3.
+a. Equivalent
+b. Equivalent
+c. Equivalent
+d. Equivalent
+
+# 4.
+`i`: `10`
+`x`: `5.0`
+`j`: `6`
+