C++输出字符指针指向的地址

 int main()
 {
     char *s2 = "jwdajkj";
     char *s1 = new char[strlen(s2)+];

     char *s3 = static_cast<char*> (memcpy(s1, s2, strlen(s2) + ));
     printf("%p,%p\n", s3, s1);
     cout << s3 << endl;
     cout << &s3[] << endl;
     cout << static_cast<void*>(s3) << endl;
 }

需要转换为void*指针，重载的操作符<<遇到地址会自动输出字符串