如何初始化指针结构

addictlinux

#include<stdio.h> #include<stdlib.h> typedef struct BiTree_Node{ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;int data; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;struct BiTree_Node *lchild; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;struct BiTree_Node *rchild; }BiTree_Node; typedef struct QNode{ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;BiTree_Node  *node; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;struct QNode *next; }QNode; main(){ &nbsp;QNode *p=(QNode *)malloc(sizeof(QNode)); &nbsp;int c=1; &nbsp;p->node->data=c; &nbsp;printf("%d n",p->node->data); }

./test
Segmentation fault

yangsf5

1. 
   
2. QNode *p=(QNode *)malloc(sizeof(QNode));
   
3. BiTree_Node* p->node = (BiTree_Node*)malloc(sizeof(BiTree_Node));
   
4. 
   
5. //现在可以使用p->node->data=c;了
   

复制代码