/in/foo.c: In function 'main':
/in/foo.c:8:11: warning: format '%d' expects argument of type 'int', but argument 2 has type 'int *' [-Wformat=]
  printf("%d",&a[i]);
           ^
/in/foo.c:25:2: warning: 'return' with no value, in function returning non-void
  return ;
  ^~~~~~
/in/foo.c:2:5: note: declared here
 int main ()
     ^~~~