/in/foo.c: In function 'main':
/in/foo.c:31:17: warning: unused variable 'i' [-Wunused-variable]
  int a[10000],n,i,x,k;
                 ^
/in/foo.c:35:4: warning: 'k' is used uninitialized in this function [-Wuninitialized]
  n=Insert(a,n,k,x);
    ^~~~~~~~~~~~~~~