--- a.cc	2019-06-08 01:11:29.327571029 +0000
+++ b.cc	2019-06-08 01:11:29.327571029 +0000
@@ -1,17 +1,19 @@
+/*!
+ *     Copyright:  Copyright (c) 2019, HiSEON.me
+ */
+
 #include <stdio.h>
 
 int sum(int a, int b);
 
-int main()
-{
-  for (int i=0;i<10;i++)
-  {
+int main() {
+  for (int i=0; i < 10; i++) {
     printf("hello, world\n");
   }
 
   return 0;
 }
 
-int sum(int a, int b){
-  return a+b;// 덧셈을 계산
+int sum(int a, int b) {
+  return a+b;  // 덧셈을 계산
 }