这个代码编译通不过,请看看

[zhuliangsu]

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/wait.h>

#define PORT 3490
#define MAXDATASIZE 100

int main(int argc, char *argv[])
{
int sockfd, numbytes;
char buf[MAXDATASIZE];
struct hostent *he;
struct sockaddr_in their_addr;

if (argc != 2)
{
fprintf(stderr,"usage: client hostname\n");
exit(1);
}
if ((he=gethostbyname(argv[1])) == NULL)
{
herror("gethostbyname");
exit(1);
}

if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
{
perror("socket");
exit(1);
}

their_addr.sin_family = AF_INET;
their_addr.sin_port = htons(PORT);
their_addr.sin_addr = *((struct in_addr *)he->h_addr);
bzero(&(their_addr.sin_zero),;

if (connect(sockfd, (struct sockaddr *)&their_addr,sizeof(struct sockaddr)) == -1)
{
perror("connect");
exit(1);
}
if ((numbytes=recv(sockfd, buf, MAXDATASIZE, 0)) == -1)
{
perror("recv");
exit(1);
}

buf[numbytes] = '\0';
printf("Received: %s",buf);
close(sockfd);

return 0;
}

[fierygnu]

少了#include <netdb.h>。
另外两处应该是笔误，自己改吧。

[ari]

bzero(&(their_addr.sin_zero),;
^^^^^^^^^^^
bzero(&(their_addr.sin_zero));

cc .. -lsocket

[zhuliangsu]

bzero(&(their_addr.sin_zero),;
^^^^^^^^^^^
bzero(&(their_addr.sin_zero));

两处应该怎么改

[iuyon]

bzero(&(their_addr.sin_zero)，sizeof(their_addr.sin_zero));