将一个新项目插入到一个链表中,我设计了这个函数但是发现没有任何作用
#include
struct entry
{
int date;
struct entry *next;
};
void insertEntry (struct entry beInsert, struct entry insert)
{
beInsert.next = insert.next;
insert.next = &beInsert;
}
int main(void)
{
struct entry n1, n2, n3, n4;
struct entry *listStar = &n1; //开头
n1.date = 10;
n1.next= &n2;
n2.date = 20;
n2.next = &n3;
n3.date = 30;
n3.next = (struct entry *)0; //结尾
n4.date = 50;
insertEntry(n4, n2);
// n4.next = n2.next; 这两行是函数运行的模式,不用函数直接运行能得到结果
//n2.next = &n4;
while(listStar != (struct entry *)0)
{
printf("%i\n", listStar->date);
listStar = listStar->next;
}
return 0;
}