填空题 函数main()的功能是：在带头结点的单链表中查找数据域中值最小的结点。请填空
#include
struct node
int data;
struct node *next;

int main(struct node *first) /*指针first为链表头指针*/
struct node *p; int m;
p=first-＞next; m=p-＞data; p=p-＞next;
for(; p!=NULL;p=______)
if(p-＞data＜M)＆NBSP;＆NBSP;＆NBSP;M=P-＞data;
return m;