/in/foo.c: In function 'main':
/in/foo.c:15:11: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[20]' [-Wformat=]
   scanf("%s", &stu[i].name);
           ^
/in/foo.c:12:21: warning: variable 'icount' set but not used [-Wunused-but-set-variable]
  char ch = 'Y'; int icount,count = 0;
                     ^~~~~~