diff --git a/paddle/capi/examples/model_inference/dense/CMakeLists.txt b/paddle/capi/examples/model_inference/dense/CMakeLists.txt
index 008a488fd9e6fdca2c4cb92bf1b8c41fce1835a9..31759310ce1c21071c53f4c4685c68495ed1cc93 100644
--- a/paddle/capi/examples/model_inference/dense/CMakeLists.txt
+++ b/paddle/capi/examples/model_inference/dense/CMakeLists.txt
@@ -2,5 +2,5 @@ project(dense)
 cmake_minimum_required(VERSION 2.8)
 aux_source_directory(. SRC_LIST)
 add_executable(${PROJECT_NAME} ${SRC_LIST})
-set_property(TARGET ${PROJECT_NAME} PROPERTY C_STANDARD 99)
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
 target_link_libraries(${PROJECT_NAME} -lpaddle_capi_shared)
diff --git a/paddle/capi/examples/model_inference/dense/main.c b/paddle/capi/examples/model_inference/dense/main.cpp
similarity index 85%
rename from paddle/capi/examples/model_inference/dense/main.c
rename to paddle/capi/examples/model_inference/dense/main.cpp
index 876af2aa7615c098d225b56ce2ea0b1529a6e3c6..e761dfe2b7709ca01d7c14dee85233ad08e451e2 100644
--- a/paddle/capi/examples/model_inference/dense/main.c
+++ b/paddle/capi/examples/model_inference/dense/main.cpp
@@ -1,13 +1,15 @@
 #include <paddle/capi.h>
 #include <time.h>
+#include <iostream>
+#include <vector>
 #include "../common/common.h"
 
 #define CONFIG_BIN "./trainer_config.bin"
 
 int main() {
   // Initalize Paddle
-  char* argv[] = {"--use_gpu=False"};
-  CHECK(paddle_init(1, (char**)argv));
+  std::string comand[] = {"--use_gpu=False"};
+  CHECK(paddle_init(1, (char**)comand));
 
   // Reading config binary file. It is generated by `convert_protobin.sh`
   long size;
@@ -53,17 +55,20 @@ int main() {
 
   CHECK(paddle_arguments_get_value(out_args, 0, prob));
 
-  std::std::vector<paddle_real> result;
-  int height;
-  int width;
+  std::vector<paddle_real> result;
+  uint64_t height;
+  uint64_t width;
 
-  CHECK(paddle_matrix_get_shape(prob, &height, &width);
+  CHECK(paddle_matrix_get_shape(prob, &height, &width));
   result.resize(height * width);
   CHECK(paddle_matrix_get_value(prob, result.data()));
 
-  printf("Prob: ");
+  printf("Prob: \n");
   for (int i = 0; i < height * width; ++i) {
-    printf("%.2f ", result[i]);
+    printf("%.4f ", result[i]);
+    if ((i + 1) % width == 0){
+      printf("\n");
+    }
   }
   printf("\n");