foo.c: In function 'main':
foo.c:52:15: warning: 'head1' is used uninitialized [-Wuninitialized]
   52 |         head1=Create(head1,n1);
      |               ^~~~~~~~~~~~~~~~
foo.c:47:14: note: 'head1' was declared here
   47 |         Node*head1;
      |              ^~~~~
foo.c:53:15: warning: 'head2' is used uninitialized [-Wuninitialized]
   53 |         head2=Create(head2,n2);
      |               ^~~~~~~~~~~~~~~~
foo.c:48:14: note: 'head2' was declared here
   48 |         Node*head2;
      |              ^~~~~
foo.c:54:15: warning: 'head3' is used uninitialized [-Wuninitialized]
   54 |         head3=Create(head3,n3);
      |               ^~~~~~~~~~~~~~~~
foo.c:49:14: note: 'head3' was declared here
   49 |         Node*head3;
      |              ^~~~~

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