/in/foo.c: In function 'main':
/in/foo.c:14:11: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[20]' [-Wformat=]
   scanf("%s", &stu[i].name);
           ^
/in/foo.c:17:11: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[10]' [-Wformat=]
   scanf("%s", &stu[i].Position);
           ^
/in/foo.c:18:11: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[2]' [-Wformat=]
   scanf("%s", &stu[i].Area);
           ^
/in/foo.c:33:36: warning: array subscript is above array bounds [-Warray-bounds]
   if (stu[i].a1 > 85 && stu[i].Area[2] == ch) {
                         ~~~~~~~~~~~^~~
/in/foo.c:45:2: warning: 'icount' may be used uninitialized in this function [-Wmaybe-uninitialized]
  printf("%d", icount);
  ^~~~~~~~~~~~~~~~~~~~