diff --git a/output/main-opt-final.pdf b/output/main-opt-final.pdf
index 9b78481..682cd67 100644
Binary files a/output/main-opt-final.pdf and b/output/main-opt-final.pdf differ
diff --git a/output/main.pdf b/output/main.pdf
index e191cfe..d371cd7 100644
Binary files a/output/main.pdf and b/output/main.pdf differ
diff --git a/section/syntax.tex b/section/syntax.tex
index d6c8318..bdc749d 100644
--- a/section/syntax.tex
+++ b/section/syntax.tex
@@ -18,17 +18,15 @@ putchar('a'); // "a" が出力される
 \defaultlistingstyle
 \begin{lstlisting}[language=C,title={\texttt{break}・\texttt{continue}文}]
 int i = 0;
-while (i < 10) {
-    if (i % 3) {
-        continue;
-    }
 
-    if (i == 8) {
+while (i < 10) {
+    if (i % 3 == 0)
+        continue;
+
+    if (i == 8)
         break;
-    }
 
     printf("%d ", i++);
 }
-
-// 出力：0 1 2 4 5 7
+// 出力：1 2 4 5 7
 \end{lstlisting}