C language Simple to create a two-fork tree __c language

#include <stdio.h> typedef int DATATYPE;
	typedef struct Tree {DataType data;
	struct tree *left;
struct tree *right;

}node,*pnode;
	Pnode Createtreenode (DataType data) {Pnode n= (pnode) malloc (sizeof (node));
	N->data = data;
	N->left = NULL;
	N->right = NULL;

return n;
	} void Treetravel (Pnode p) {if (NULL = p) {return;
	} treetravel (P->left);
	printf ("%d", p->data);

Treetravel (P->right); }//* 7 1 5 6 2 9 4 8 6 7 1 9 5 8 3 6 2/void M

	Ain () {Pnode root=null;

	Pnode p1=null, P2=null, P3=null, P4=null, P5=null, P6=null, P7=null,p8=null,p9=null;
	P1 = Createtreenode (7);
	P2 = createtreenode (1);
	P3 = Createtreenode (9);
	P4 = Createtreenode (5);
	P5 = Createtreenode (8);
	P6 = Createtreenode (3);
	P7 = Createtreenode (6);
	P8 = Createtreenode (2);

	P9 = Createtreenode (4);
	P1->left = p2;

	P1->right = p3;

	P2->right = P4;

	P3->left = P5;
	P4->left = P6; P4->right = P7;
	P6->left = P8;
	
	P6->right = P9;
	root = p1;

	Treetravel (root);
GetChar ();
 }