/in/foo.c: In function 'main':
/in/foo.c:6:9: warning: 'n' is used uninitialized [-Wuninitialized]
    6 |         int arr[n];
      |         ^~~
/in/foo.c:5:9: note: 'n' was declared here
    5 |     int n;
      |         ^
/in/foo.c:9:18: warning: '*arr[0]' is used uninitialized [-Wuninitialized]
    9 |         if(x<=arr[0]){
      |               ~~~^~~
/in/foo.c:11:24: warning: '*arr[<unknown>]' may be used uninitialized [-Wmaybe-uninitialized]
   11 |         }else if(x>=arr[n-2]){
      |                     ~~~^~~~~
/in/foo.c:23:31: warning: 'flag' may be used uninitialized [-Wmaybe-uninitialized]
   23 |                         arr[i]=arr[i-1];
      |                         ~~~~~~^~~~~~~~~
/in/foo.c:7:15: note: 'flag' was declared here
    7 |         int x,flag,i;
      |               ^~~~