#include<stdio.h>
struct student
{
   char no[10];
};

int main()
{
   struct student stu={ "2018"};
   struct student* p=NULL;

   p=&stu;
   printf("%s, %s", (*p).no, p.no);
}

In function 'main':
Line 13: error: request for member 'no' in something not a structure or union