foo.c: In function 'main':
foo.c:72:15: warning: 'head1' is used uninitialized [-Wuninitialized]
   72 |         head1=Create(head1,n1);
      |               ^~~~~~~~~~~~~~~~
foo.c:67:14: note: 'head1' was declared here
   67 |         Node*head1;
      |              ^~~~~
foo.c:73:15: warning: 'head2' is used uninitialized [-Wuninitialized]
   73 |         head2=Create(head2,n2);
      |               ^~~~~~~~~~~~~~~~
foo.c:68:14: note: 'head2' was declared here
   68 |         Node*head2;
      |              ^~~~~
foo.c:74:15: warning: 'head3' is used uninitialized [-Wuninitialized]
   74 |         head3=Create(head3,n3);
      |               ^~~~~~~~~~~~~~~~
foo.c:69:14: note: 'head3' was declared here
   69 |         Node*head3;
      |              ^~~~~

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