creation of binary tree

can anyone tell what is wrong with this program,please.
#include<stdio.h>
#include<stdlib.h>
#define NULL 0
struct binary
{
int number;
struct binary *parent;
struct binary *rightchild;
struct binary *leftchild;
};
typedef struct binary node;
main()
{
void create(node *head);
void inorder(node *head);
node *head;
head=(node *)malloc(sizeof(node));
printf("enter number and press -999 at the end");
scanf("%d",&head->number);
head->parent=NULL;
head->rightchild=NULL;
head->leftchild=NULL;
create(head);
inorder(head);
}
void create(node *list1)
{
node *list,*head1;
int x;
head1=list1;
printf("enter number and press -999 at the end");
scanf("%d",&x);
if(x==-999)
return;
else
{
while(head1!=NULL)
{
list=head1;
if(x<head1->number)
{
if(head1->leftchild==NULL)
{
list->leftchild=(node *)malloc(sizeof(node));
list=list->leftchild;
}
head1=head1->leftchild;
continue;
}
if(x>=head1->number)
{
if(head1->rightchild==NULL)
{
list->rightchild=(node *)malloc(sizeof(node));
list=list->rightchild;
}
head1=head1->rightchild;
}
}
list->number=x;
list->parent=list;
list->rightchild=NULL;
list->leftchild=NULL;
create(list1);
}
return;
}
void inorder(node *head1)
{
if(head1!=NULL)
{
inorder(head1->leftchild);
printf("%d",head1->number);
inorder(head1->rightchild);
}
return;
}