foo.c: In function 'InsertHead':
foo.c:23:20: error: 'new' undeclared (first use in this function); did you mean 'newp'?
   23 |         Node *newp=new Node;  newp->data=x;
      |                    ^~~
      |                    newp
foo.c:23:20: note: each undeclared identifier is reported only once for each function it appears in
foo.c:23:24: error: expected ',' or ';' before 'Node'
   23 |         Node *newp=new Node;  newp->data=x;
      |                        ^~~~
foo.c: In function 'Insert':
foo.c:40:20: error: 'new' undeclared (first use in this function); did you mean 'newp'?
   40 |         Node *newp=new Node;  newp->data=x;
      |                    ^~~
      |                    newp
foo.c:40:24: error: expected ',' or ';' before 'Node'
   40 |         Node *newp=new Node;  newp->data=x;
      |                        ^~~~

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