new file mode 100644

@@ -0,0 +1,17 @@

+#include <stdio.h>

+

+int sum(int a, int b);

+

+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

+}