[c++] 구조체 포인터 node 관리 - find

  
#include<stdio.h>
#include<stdlib.h>
struct node{
	int data;
	struct node *next;
};
int node_find(struct node *head, int key);
void list_print(struct node *);
void main(){
	struct node a, b, c;
	struct node *head;
	int find, key;
	head=&a;
	a.data = 10;
	b.data = 20;
	c.data = 30;
	a.next= &b;
	b.next = &c; 
	c.next = NULL; 
	list_print(head);
	while(key!=-1)
	{
		printf("\n>>데이터 찾기\n찾고자 하는 데이터 : ");
		scanf("%d",&key);
		find = node_find(head,key);
		if(find)
			printf("찾기 성공\n");
		else
			printf("못찾음ㅋㅁ\n");
	}
}
void list_print(struct node *head){ 
	for(; head; head=head->next)
		printf("%d\n", head->data);
}
int node_find(struct node *head, int key)
{
	for(; head; head=head->next)
	{
		if(head->data==key)
		{
			printf("\n%d\n", head->data);
			return head->data;
		}
	}
	return 0;

}