foo.cc: In function 'int SearchArray(Node*, int)':
foo.cc:35:13: warning: statement has no effect [-Wunused-value]
   35 |         for(head;head!=p;head=head->next)
      |             ^~~~
foo.cc: In function 'int main()':
foo.cc:81:11: warning: statement has no effect [-Wunused-value]
   81 |     for ( pp;pp<a+n;pp++)  {cin>>*pp;}
      |           ^~
foo.cc:78:19: warning: unused variable 'cnt' [-Wunused-variable]
   78 |         int n;int cnt=0;
      |                   ^~~

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