#include
#include
#include
main(){ char ch; typedef struct node { char data; struct node *next; }listnode; typedef listnode *linklist; linklist head=(linklist *)malloc(sizeof(linklist)); listnode *s,*r,*p; r=head; while((ch=getchar())!='\n') { s=(linklist *)malloc(sizeof(linklist)); s->data=ch; r->next=s; r=s; } r->next=NULL; p=head; while(p->next!=NULL) { printf("%s",p->data); p=p->next; }}查了几个小时都没查出来，郁闷了

linklist head=(linklist *)malloc(sizeof(linklist)); 有问题

你这编译都会出错误吧。。应该是linklist head = =(linklist)malloc(sizeof(linklist));