单向链表理解问题
#include<stdio.h>#include<ctype.h>
#include<stdlib.h>
int main(void)
{
struct horse
{
int age;
int height;
char name[20];
char father[20];
char mother[20];
struct horse *next;
};
struct horse *first=NULL;
struct horse *current=NULL;
struct horse *previous=NULL;
char test='\0';
for( ; ; )
{
printf("\nDo you want to enter details of a%s horse(Y or N)?",
first!=NULL?"nother":"");
scanf(" %c",&test);
if(tolower(test)=='n')
break;
current=(struct horse*)malloc(sizeof(struct horse));
if(first==NULL)
first=current;
if(previous!=NULL)
(*previous).next=current;
printf("\nEnter the name of the horse: ");
scanf("%s",(*current).name);
printf("\nHow old is %s?",(*current).name);
scanf("%d",(*current).age);
printf("\nHow high is %s (in hand)?",(*current).name);
scanf("%d",&(*current).height);
printf("\nWho is %s's father?",(*current).name);
scanf("%s",(*current).father);
printf("\nWho is %s's mother?",(*current).name);
scanf("%s",(*current).mother);
(*current).next=NULL;
previous=current;
}
current=first;
while(current!=NULL)
{
printf("\n\n%s is %d years old,%d hands high,",
(*current).name,(*current).age,(*current).height);
printf(" and has %s and %s as parents.",(*current).father,
(*current).mother);
previous=current;
current=(*current).next;
free(previous);
}
return 0;
}
最后显示循环的while()循环中，（*current）.next赋给current如何理解？
