/in/foo.c: In function 'main':
/in/foo.c:19:18: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'int' [-Wformat=]
   19 |          scanf("%d",stu[i].grade1);
      |                 ~^  ~~~~~~~~~~~~~
      |                  |        |
      |                  int *    int
/in/foo.c:20:18: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'int' [-Wformat=]
   20 |          scanf("%d",stu[i].grade2);
      |                 ~^  ~~~~~~~~~~~~~
      |                  |        |
      |                  int *    int
/in/foo.c:21:18: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'int' [-Wformat=]
   21 |          scanf("%d",stu[i].grade3);
      |                 ~^  ~~~~~~~~~~~~~
      |                  |        |
      |                  int *    int
/in/foo.c:22:18: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'int' [-Wformat=]
   22 |          scanf("%d",stu[i].grade4);
      |                 ~^  ~~~~~~~~~~~~~
      |                  |        |
      |                  int *    int
/in/foo.c:23:18: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'int' [-Wformat=]
   23 |          scanf("%d",stu[i].grade5);
      |                 ~^  ~~~~~~~~~~~~~
      |                  |        |
      |                  int *    int