关于gcc

lxclinuxer

gethostname
gethostbyname来得到本地IP时，
我用gcc -o test main.c可以编译出来
用g++ -o test main.c不能编译出来，它老说p->h_addr_list没有定义，头文件也没有 少啊，怎么回事？用g++为什么不行？

mozilla

贴出源码，我试了一下可以编译

lxclinuxer

[code:1]
#include <stdio.h>
#include <stdlib.h>
/*
#include <iostream>
#include <iomanip>
*/
#include <unistd.h>
#include <netdb.h>
void output(struct hostent const* p)
{
    /*
    std::cout<<p->h_name<<std::endl;
    std::cout<<(p->(h_addr))<<std::endl;
    */
    printf("offical name of host is: %s\n",p->h_name);
    int index=1;
    char ** pp=p->h_aliases;
    while(*pp)
    {
        printf("alias name %d is :%s\n",index,*pp);
        pp++;
        index++;
    }
    printf("address type is :%d , address length is :%d\n",p->h_addrtype,p->h_length);
    pp=p->h_addr_list;
    index=1;
    while(*pp)
    {
    printf("%s\n",inet_ntoa(*((struct in_addr*)(*pp))));
/*
      printf("ip address %d is :%d.%d.%d.%d\n",index,(unsignedchar)(*pp)[0],(unsigned  char)(*pp)[1],(unsigned char)(*pp)[2],(unsigned)(*pp)[3]);
*/
        pp++;
        index++;
    }
//    printf("%s\n",inet_ntoa(*((struct in_addr*)p->h_addr)));
}
void showHostInfo(char *buffer,size_t size)
{
    if(gethostname(buffer,size)==0)
    {
        printf("hostname is :%s\n",buffer);
        struct hostent* phst=gethostbyname(buffer);
        output(phst);
    }
    endhostent();
}
int main(int argc,char* argv[])
{
    char buffer[100]="\0";
    printf("\n*****************************\n");
    showHostInfo(buffer,sizeof(buffer));
    printf("*****************************\n\n");
    return 0;
}

[/code:1]

lxclinuxer

还用我用的是红旗4.1