foo.c: In function 'main':
foo.c:6:6: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
  p[0]=a[0];
      ^
foo.c:7:11: warning: format '%d' expects argument of type 'int', but argument 2 has type 'int *' [-Wformat=]
  printf("%d",p[0]);
          ~^  ~~~~
          %ls

[Hydro](https://hydro.ac)提供评测服务