error C2275: 'pnode' : illegal use of this type as an expression

#include<stdio.h>
#include<malloc.h>
#include<stdlib.h>

typedef struct node
{
    int data;
    struct node *next;

}node,*pnode;


pnode a(void);
void b(pnode phand);


int main(void)
{
    pnode phand=NULL;
    phand=a();
    b(phand);
    return 0;
}

pnode a(void)
{
    int len;
    int i;
    int val;
   

    pnode phand=(pnode)malloc(sizeof(node));
    if(phand==NULL)
    {
        printf("分配失败，程序终止！");
        exit(-1);
    }
    pnode ptail=phand;
    ptail->next=NULL;

    printf("请输入所需要的长度：");
    scanf("%d",&len);

    for(i=0;i<len;i++)
    {
        printf("请输入第%d个值:"，i+1);
        scanf("%d",&val);
            pnode pnew=(pnode)malloc(sizeof(node));
    if(pnew==NULL)
    {
        printf("分配失败，程序终止！")；
        exit(-1);
    }
    pnew->data=val;
    ptail->next=pnew;
    pnew->next=NULL;
    ptail=pnew;

    }


}
void b(pnode phand)
{
pnode p=phand->next;
while(p!=NULL)
{
    printf("%d",p->data);
    p=p->next;
}
}

[此贴子已经被作者于2017-10-21 13:23编辑过]

a()几处：
    for(i=0; i<len; i++)
    {
        //printf("请输入第%d个值:"，i+1); 全角逗号
        printf("请输入第%d个值:",i+1);
        scanf("%d",&val);
        pnode pnew=(pnode)malloc(sizeof(node));
        if(pnew==NULL)
        {
            //printf("分配失败，程序终止！")；全角分号
            printf("分配失败，程序终止！");
            exit(-1);
        }
        pnew->data=val;
        ptail->next=pnew;
        pnew->next=NULL;
        ptail=pnew;
    }
    return phand;  //返回首节点指针

谢谢您 ，我知道了，疏忽了