简单的链表~~删除接点问题

#include "stdio.h"
#include "conio.h"
#include "math.h"
struct node
{int data;
struct node *next;};
typedef struct node AA;
AA *gz() /*链表函数*/
{AA *h,*r,*b; int a;
r=(AA *)malloc(sizeof(AA));
h=r;
printf("qing shu ru\n");
scanf("%d",&a);
while(a)
{ b=(AA *)malloc(sizeof(AA));
b->data=a;
r->next=b;
r=b;
scanf("%d",&a);}
r->next='\0';
return h;}

sh()
{AA *p,*t,*head=gz(); /*输出和删除接点函数*/

t=head->next;
while(t)

我想应该在这里写表达式~~可是我不会晕

{printf("%d->",t->data);
t=t->next;}}
main()

{ sh(); getch(); }