在insert函数里,node->next=p->next那步在vscode里会报错是怎么回事？-灵析社区

走你啊啊啊啊啊

#include #include #include typedef struct Node{ int data; struct Node *next; } Node; Node *insert(Node *head, int pos,int val){ Node new_head, *p = &new_head,*node = getNewNode(val); new_head.next = head; for(int i = 0; i next; node->next = p->next; p->next = node; return new_head.next; } Node *getNewNode(int val){ Node *p = (Node*)malloc(sizeof(Node)); p->data = val; p->next = NULL; return p; } void clear(Node *head){ if(head == NULL) return; for(Node *p = head,*q;p; p = q){ q = p->next; free(p); } return; } void output_linklist(Node *head){ int n = 0; for(Node *p = head;p;p = p->next) n +=1; for(int i = 0;i next){ printf("%3d",p->data); printf("->"); } printf("\n\n\n"); return; } int main(){ srand(time(0)); #define MAX_OP 20 Node *head = NULL; for(int i =0; i < MAX_OP; i++){ int pos = rand()%(i + 1), val = rand()%100; printf("insert %d at %d to linklist\n",val,pos); head = insert(head,pos,val); output_linklist(head); } return 0; }

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问AI
这个回答算是对楼上问题评论区小伙伴的回答补充，在insert函数之前添加一个函数声明，或者将getNewNode函数的定义移到insert函数的前面就可以运行了。 比如说这样： #include #include #include typedef struct Node{ int data; struct Node *next; } Node; Node *getNewNode(int val){ Node *p = (Node*)malloc(sizeof(Node)); p->data = val; p->next = NULL; return p; } Node *insert(Node *head, int pos,int val){ Node new_head, *p = &new_head,*node = getNewNode(val); new_head.next = head; for(int i = 0; i next; node->next = p->next; p->next = node; return new_head.next; } void clear(Node *head){ if(head == NULL) return; for(Node *p = head,*q;p; p = q){ q = p->next; free(p); } return; } void output_linklist(Node *head){ int n = 0; for(Node *p = head;p;p = p->next) n +=1; for(int i = 0;i next){ printf("%3d",p->data); printf("->"); } printf("\n\n\n"); return; } int main(){ srand(time(0)); #define MAX_OP 20 Node *head = NULL; for(int i =0; i < MAX_OP; i++){ int pos = rand()%(i + 1), val = rand()%100; printf("insert %d at %d to linklist\n",val,pos); head = insert(head,pos,val); output_linklist(head); } return 0; }