From 16de0a628882ef28cc054e68bbb70feabaacc01e Mon Sep 17 00:00:00 2001
From: Xu Shaohua <shaohua@biofan.org>
Date: Fri, 1 Dec 2023 16:01:54 +0800
Subject: [PATCH] ds: Fix extern error

---
 ds/1.intro/CMakeLists.txt | 4 ++--
 ds/4.tree/binary_tree.h   | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/ds/1.intro/CMakeLists.txt b/ds/1.intro/CMakeLists.txt
index 51527680..87f1a22e 100644
--- a/ds/1.intro/CMakeLists.txt
+++ b/ds/1.intro/CMakeLists.txt
@@ -1,7 +1,7 @@
 
-add_executable(ds_intro_polynomial
+add_executable(polynomial
     main.c
     )
-target_link_libraries(ds_intro_polynomial
+target_link_libraries(polynomial
     -lm
     )
\ No newline at end of file
diff --git a/ds/4.tree/binary_tree.h b/ds/4.tree/binary_tree.h
index 29343b65..7ad7311f 100644
--- a/ds/4.tree/binary_tree.h
+++ b/ds/4.tree/binary_tree.h
@@ -8,7 +8,7 @@
 #include <stdint.h>
 
 #ifdef __cplusplus
-extern "C"
+extern "C" {
 #endif
 
 typedef struct binary_tree_s binary_tree_t;