Node* fresh = malloc(sizeof(Node));
时间: 2024-06-02 21:13:57 浏览: 10
This line of code allocates memory for a new Node object using the malloc() function. The size of the memory block is determined by the sizeof() operator, which calculates the amount of memory required for a single Node object. The resulting memory block is then assigned to the pointer variable fresh, which can be used to access and manipulate the newly allocated memory.
相关问题
#include<stdio.h> #include<stdlib.h> typedef struct Node{ int data; struct Node* next; }Node; Node* initList(){ Node*list=(Node*)malloc(sizeof(Node)); list -> data=0; list->next=NULL; return list;} void headInsert(Node*list,int data){ Node*node=(Node*)malloc(sizeof(Node)); Node*head=list; node->data=data; node->next=list->next; list->next=node; list->data++; } void lastInsert(Node*list,int data){ Node*head=list; Node*node=(Node*)malloc(sizeof(Node)); node->data=data; node->next=NULL; list=list->next; while(list->next){ list=list->next; } list->data=node; list->data++; } void printList(Node*list){ list=list->next; while(list){ printf("%d",list->data); list=list->next; }printf("\n");} int main(){ Node*list=intiList(); headInsert(list,2); headInsert(list,3); headInsert(list,4); lastInsert(list,8); printList(list); return 0; }
I see that there is a typo in your code. In the `main()` function, you have a typo in the line `Node*list=intiList();`. It should be `Node*list=initList();` instead.
Here's the corrected version of your code:
```c
#include <stdio.h>
#include <stdlib.h>
typedef struct Node {
int data;
struct Node* next;
} Node;
Node* initList() {
Node* list = (Node*)malloc(sizeof(Node));
list->data = 0;
list->next = NULL;
return list;
}
void headInsert(Node* list, int data) {
Node* node = (Node*)malloc(sizeof(Node));
Node* head = list;
node->data = data;
node->next = list->next;
list->next = node;
list->data++;
}
void lastInsert(Node* list, int data) {
Node* head = list;
Node* node = (Node*)malloc(sizeof(Node));
node->data = data;
node->next = NULL;
list = list->next;
while (list->next) {
list = list->next;
}
list->next = node;
head->data++;
}
void printList(Node* list) {
list = list->next;
while (list) {
printf("%d ", list->data);
list = list->next;
}
printf("\n");
}
int main() {
Node* list = initList();
headInsert(list, 2);
headInsert(list, 3);
headInsert(list, 4);
lastInsert(list, 8);
printList(list);
return 0;
}
```
Now you should be able to compile and run your code without any syntax errors. The corrected code initializes a linked list, inserts nodes at the head and at the end, and then prints the data in the list.
调整以下代码删除节点:#include<stdio.h> #include<stdlib.h> typedef struct Node{ int data; Node* next; }Node; Node* createlist(){ Node* head=(Node*)malloc(sizeof(Node)); head->next=NULL; return head; } Node* createnode(int data){ Node* newnode=(Node*)malloc(sizeof(Node)); newnode->data=data; newnode->next=NULL; return newnode; } void insertnode(Node* head,int data){ Node* newnode=createnode(data); newnode->next=head->next; head->next=newnode; } void deletenode(Node* head){ Node* newnode=head->next; head->next=newnode->next->next; free(newnode); } void printlist(Node* head){ Node* p=head->next; while(p){ printf("%d",p->data); p=p->next; } printf("\n"); } int main() { Node* list=createlist(); insertnode(list,1); insertnode(list,3); insertnode(list,5); printlist(list); printf("\n"); deletenode(list); printlist(list); return 0; }
以下是已经删除节点的代码:
#include<stdio.h>
#include<stdlib.h>
typedef struct Node{
int data;
Node* next;
}Node;
Node* createlist(){
Node* head=(Node*)malloc(sizeof(Node));
head->next=NULL;
return head;
}
Node* createnode(int data){
Node* newnode=(Node*)malloc(sizeof(Node));
newnode->data=data;
newnode->next=NULL;
return newnode;
}
void insertnode(Node* head,int data){
Node* newnode=createnode(data);
newnode->next=head->next;
head->next=newnode;
}
void deletenode(Node* head){
Node* newnode=head->next;
head->next=newnode->next;
free(newnode);
}
void printlist(Node* head){
Node* p=head->next;
while(p){
printf("%d",p->data);
p=p->next;
}
printf("\n");
}
int main() {
Node* list=createlist();
insertnode(list,1);
insertnode(list,3);
insertnode(list,5);
printlist(list);
printf("\n");
deletenode(list);
printlist(list);
return 0;
}
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