foo.c: In function 'Add':
foo.c:31:13: warning: variable 'ans' set but not used [-Wunused-but-set-variable]
   31 |         int ans[100000] = { 0 };
      |             ^~~
foo.c: In function 'MulHigh':
foo.c:51:31: warning: passing argument 2 of 'Add' makes pointer from integer without a cast [-Wint-conversion]
   51 |                 ans0=Add(ans, n0, ans0, n0);
      |                               ^~
      |                               |
      |                               int
foo.c:29:22: note: expected 'int *' but argument is of type 'int'
   29 | int Add(int a[], int b[], int n1, int n2)
      |                  ~~~~^~~

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