/in/foo.c: In function 'main':
/in/foo.c:9:25: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'int' [-Wformat=]
    9 |                 scanf("%d",a[i]);}
      |                        ~^  ~~~~
      |                         |   |
      |                         |   int
      |                         int *
/in/foo.c:9:17: warning: 'a' may be used uninitialized [-Wmaybe-uninitialized]
    9 |                 scanf("%d",a[i]);}
      |                 ^~~~~~~~~~~~~~~~
/in/foo.c:7:13: note: 'a' declared here
    7 |         int a[1000];
      |             ^