结构体中指针变量的使用技巧

#include <stdio.h>
#include <memory.h>
#include <string.h>


#define NODEINFOBUF    32
typedef struct tagNodeInfo
{
    char a;
    short b;
    int c;
    char *d;
    char *e;
}NODEINFO, *PNODEINFO;

int main(int argc, char* argv[])
{
    NODEINFO *node = (PNODEINFO)new char[NODEINFOBUF];
    if (NULL == node) return -1;
    memset(node, 0, NODEINFOBUF);

    node->a = 10;
    node->b = 20;
    node->c = 30;
    char *pBuf = (char*)&node->d;        // 指针的指针强转成char类型指针

    strcpy(pBuf, "ddddd");
    pBuf+=(strlen(pBuf)+sizeof(char));    // 结尾标志符

    strcpy(pBuf, "eeeee");

    delete[] (char*)node;
    node = NULL;

    return 0;
}