diff --git a/cameraApp/cameraApp/src/main/cpp/camera_manager.cpp b/cameraApp/cameraApp/src/main/cpp/camera_manager.cpp
index e7a79faff70ddec426c9ec61fb6a9fffdc62d256..0dc5308220593bb3b6e6ff9f80406970a6f7fd90 100755
--- a/cameraApp/cameraApp/src/main/cpp/camera_manager.cpp
+++ b/cameraApp/cameraApp/src/main/cpp/camera_manager.cpp
@@ -617,7 +617,7 @@ int SampleCameraManager::SampleCameraCreate()
     list<string> camList = camKit->GetCameraIds();
     for (auto &cam : camList) {
         camId = cam;
-  	    break;
+        break;
     }
 
     if (camId.empty()) {
diff --git a/launcher/launcher/src/main/cpp/main_ability_slice.cpp b/launcher/launcher/src/main/cpp/main_ability_slice.cpp
index f2e5376b52ddac905c9494560519e40db45af1ae..2ee787ec410f34bfb45da496cd9e800716630c6c 100755
--- a/launcher/launcher/src/main/cpp/main_ability_slice.cpp
+++ b/launcher/launcher/src/main/cpp/main_ability_slice.cpp
@@ -13,7 +13,7 @@
  * limitations under the License.
  */
 
-#include <stdio.h>
+#include <cstdio>
 #include <common/screen.h>
 #include <components/ui_label.h>
 #include <components/ui_label_button.h>
diff --git a/media/camera_sample.cpp b/media/camera_sample.cpp
index 4f1a09f6ef5d0d6c46af192ff12ac71341125907..e19c5451c00cba0fd48a50bdbab2c9372a49836e 100755
--- a/media/camera_sample.cpp
+++ b/media/camera_sample.cpp
@@ -85,10 +85,7 @@ Recorder *SampleCreateRecorder()
     int32_t audioSourceId = 0;
     int32_t width = 1920;
     int32_t height = 1080;
-    VideoCodecFormat encoder;
-    encoder = HEVC;
-    width = 1920;
-    height = 1080;
+    VideoCodecFormat encoder = HEVC;
     Recorder *recorder = new Recorder();
     if ((ret = recorder->SetVideoSource(source, sourceId)) != SUCCESS) {
         cout << "SetVideoSource failed." << ret << endl;