foo.cc: In function 'int iset(int*, int, int*, int, int*)':
foo.cc:16:13: warning: unused variable 'i' [-Wunused-variable]
   16 |         int i=0,k=0;
      |             ^
foo.cc: In function 'int cp(int*, int, int*)':
foo.cc:26:1: warning: no return statement in function returning non-void [-Wreturn-type]
   26 | }
      | ^
foo.cc: In function 'int main()':
foo.cc:43:15: warning: 'memset' used with constant zero length parameter; this could be due to transposed parameters [-Wmemset-transposed-args]
   43 |         memset(h,sizeof(h),0);
      |         ~~~~~~^~~~~~~~~~~~~~~

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