[英]Inserting a node at the end of linked list
#include <stdio.h>
#include <conio.h>
struct node {
int data;
struct node* next;
};
int main() {
struct node* head = NULL;
struct node* second = NULL;
struct node* third = NULL;
head = (struct node*)malloc(sizeof(struct node));
second = (struct node*)malloc(sizeof(struct node));
third = (struct node*)malloc(sizeof(struct node));
head->data = 1;
head->next = second;
second->data = 2;
second->next = third;
third->data = 3;
third->next = NULL;
struct node* temp;
temp = head;
while (temp != NULL) { // for printing the linked list
printf("%d ",temp->data);
temp = temp->next;
}
struct node* new1;
struct node* temp1;
temp1 = head;
while (temp1 != NULL) { // for traversing to the end
temp1 = temp1->next;
}
new1 = (struct node*)malloc(sizeof(struct node));
new1->data = 5;
new1->next = NULL;
temp1->next = new1;
while (temp1 != NULL) { // again for printing the list
printf("%d ",temp1->data);
temp1 = temp1->next;
}
return 0;
}
我试图在我的链表的末尾插入一个节点,但它无法正常工作。 我成功创建了链表,但我无法在最后插入节点。 这是我老师教给我的,但它没有用。
while(temp1 != NULL) // for traversing to the end
{
temp1 = temp1->next;
}
这将循环,直到temp1
为 NULL
。 您需要获取最后一个节点,即当temp1->next
为NULL
,例如
while(temp1->next != NULL) // for traversing to the end
{
temp1 = temp1->next;
}
据我所知,在评论的部分
// for traversing to the end
实施迭代太过分了; 条件应该是
while ( temp1->next != NULL )
到达最后一个节点后立即终止,而不是在到达终止NULL
指针时终止。
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