#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#define TSIZE 45
struct film{
char title[TSIZE];
int rating;
struct film *next;
};
int main(void)
{
struct film *head =NULL;
struct film *prev,*current;
char input[TSIZE];
puts("enter first film:");
/*创建链表，并输入数据*/
while(gets(input)!=NULL&&input[0]!='\0')
{
current=(struct film *)malloc(sizeof(struct film));
if(head==NULL)head=current;
elseprev->next=current;
current->next=NULL;
strcpy(current->title,input);
puts("enter your rating<0-10>: ");
scanf("%d",¤t->rating);
while(getchar()!='\n') continue;
puts("enter next movie title (emput to stop):");
prev=current;
}
/*打印数据*/
if(head==NULL)printf("no data!\n");
elseprintf("here is the movie list:\n");
current=head;
while(current!=NULL)
{
printf("movie: %s rating: %d\n",current->title,current->rating);
current=current->next;
}
/*清除内存*/
current=head;
while(current!=NULL)
{
free(current);
current=current->next;
}
printf("Bye!\n");
return 0;
}
书上有程序，不过我还是手打一遍。。。。

enter first film:
renda
enter your rating<0-10>:
1
enter next movie title (emput to stop):
here is the movie list:movie: renda rating: 1
运行到这里，出来一个报错框，大意是dbgheap.c文件中的1044行有误，应该是和malloc有关。
看运行情况，应该是到free哪里出错的，错误是Expression:_CrtIsValid HeapPointer(pUserData)，大概指指针用错或是内存出错。。。
我可这应该是CPP书上原文啊。。。

八成是free有问题，因为我把free注释掉就运行正常了，我实在看不出free有啥错啊，cpp书上也是这么写的。