C语言链表尾部插入新节点的问题

#include<stdio.h>
#include<stdlib.h>
#include<strings.h>
struct node
{
    int data;
    struct node *pnext;
};
struct node *create_node(int);
void insert_tail(struct node *,struct node *);
int main()
{
    struct node *pheader = create_node(0);
    insert_tail(pheader,create_node(1));
    insert_tail(pheader,create_node(2));
    insert_tail(pheader,create_node(3));
    printf("header node data = %d\n",pheader->data);
    printf("node 1 data = %d\n",pheader->pnext->data);
    printf("node 2 data = %d\n",pheader->pnext->pnext->data);
    printf("node 3 data = %d\n",pheader->pnext->pnext->pnext->data);
}
struct node *create_node(int data)
{
    struct node * p = (struct node*)malloc(sizeof(struct node));
    if(NULL == p)
    {
        printf("malloc error!\n");
        return NULL;
    }
    memset(p,0,sizeof(struct node));
    p->data = data;
    p->pnext = NULL;
    return p;
}
void insert_tail(struct node *ph,struct node *new)  [Error] expected ',' or '...' before 'new'
{
    int count = 0;
    while(NULL != ph)
    {
        ph = ph->pnext;
        count++;
    }
    ph->pnext = new;  [Error] expected type-specifier before ';' token
    ph->data = count + 1;
}
这是C语言链表尾部插入新节点的程序，但运行时总是出现2个错误，分别是上面两处红色部分，我改了好久也没有成功，希望大佬能给我提供点帮助。