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warning: passing arg 1 of `inet_addr' makes pointer from integer without a cast

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# 1  
Old 12-11-2009
Question warning: passing arg 1 of `inet_addr' makes pointer from integer without a cast
I use solaris10,following is tcp client code:
Code:
#include "cliserv.h"
int main(int argc,char argv[]){
  struct sockaddr_in serv;
  char request[REQUEST],reply[REPLY];
  int sockfd,n;
  if(argc!=2)
    err_quit("usage: tcpclient <IP address of server>");
  if((sockfd=socket(PF_INET,SOCK_STREAM,0))<0)
    err_sys("socket error");
  memset(&serv,0,sizeof(serv));
  serv.sin_family=AF_INET;
  serv.sin_addr.s_addr=inet_addr(argv[1]);
  serv.sin_port=htons(TCP_SERV_PORT);
  if(connect(sockfd,(SA)&serv,sizeof(serv))<0)
    err_sys("connect error");
  if(write(sockfd,request,REQUEST)!=REQUEST)
    err_sys("write error");
  if(shutdown(sockfd,1)<0)
    err_sys("shutdown error");
  exit(0);
}

when I compile it,it raise following warning:
$gcc -lsocket -lnsl tcpclient.c -o tcpclient
tcpclient.c: In function `main':
tcpclient.c:12: warning: passing arg 1 of `inet_addr' makes pointer from integer without a cast

When I execute it,it raise following error:
$tcpserver &
$tcpclient 127.0.0.1
Segmentation Fault (core dumped)

How to correct above error? How to modify "tcpclient.c:12: warning: passing arg 1 of `inet_addr' makes pointer from integer without a cast"?

Thanks
# 2  
Old 12-23-2009
Hi,

You've defined argv as an array of characters, rather than an array of character arrays (i.e. strings). Change your 'main' function definition to this (note the asterisk):

int main(int argc,char *argv[]){

Or, my prefered way of writing it:

int main(int argc,char **argv){

Kind regards,

Andy Barry
Last edited by vbe; 12-26-2009 at 10:09 AM..
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