foo.c: In function 'main':
foo.c:41:15: warning: 'head1' is used uninitialized [-Wuninitialized]
   41 |         head1=Create(head1,n1);
      |               ^~~~~~~~~~~~~~~~
foo.c:37:14: note: 'head1' was declared here
   37 |         Node*head1;
      |              ^~~~~
foo.c:42:15: warning: 'head2' is used uninitialized [-Wuninitialized]
   42 |         head2=Create(head2,n2);
      |               ^~~~~~~~~~~~~~~~
foo.c:38:14: note: 'head2' was declared here
   38 |         Node*head2;
      |              ^~~~~

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