/in/foo.c: In function 'insert':
/in/foo.c:6:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  for(i=0;i<n;i++)
  ^~~
/in/foo.c:13:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
   j[i]=x;
   ^
/in/foo.c:14:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^