diff --git a/abc042/b.c b/abc042/b.c
index bab8518..27afb24 100644
--- a/abc042/b.c
+++ b/abc042/b.c
@@ -16,14 +16,14 @@ int	main(void)
 	while (i < num)
 	{
 		scanf("%s", strs[i]);
-		++i;
+		i++;
 	}
 	qsort(strs, num, sizeof(strs[0]), cmp_str);
 	i = 0;
 	while (i < num)
 	{
 		printf("%s", strs[i]);
-		++i;
+		i++;
 	}
 	puts("");
 }