foo.c:2:1: warning: return type defaults to 'int' [-Wimplicit-int]
    2 | Insert(int b[],int n,int x)
      | ^~~~~~
foo.c: In function 'Insert':
foo.c:5:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
    5 |  for(i=n-2;i>=0;i--)
      |  ^~~
foo.c:13:3: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   13 |   if(i<0)
      |   ^~
foo.c: In function 'main':
foo.c:22:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   22 |  scanf("%d",&n);
      |  ^~~~~~~~~~~~~~
foo.c:24:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   24 |   scanf("%d",&a[i]);
      |   ^~~~~~~~~~~~~~~~~
foo.c:25:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   25 |  scanf("%d",&x);
      |  ^~~~~~~~~~~~~~

[Hydro](https://hydro.ac)提供评测服务