text: #include <func.h>
  
  int main(int argc,char* argv[])
  {
      ARGS_CHECK(argc,3);
      int socketFd=socket(AF_INET,SOCK_DGRAM,0);
      ERROR_CHECK(socketFd,-1,"socket");
      struct sockaddr_in serAddr;
      bzero(&serAddr,sizeof(serAddr));
      serAddr.sin_family=AF_INET;
      serAddr.sin_port=htons(atoi(argv[2]));
      serAddr.sin_addr.s_addr=inet_addr(argv[1]);
      char buf[1024]={0};
      sendto(socketFd,"Hi I'm client",13,0,(struct sockaddr*)&serAddr,sizeof(serAddr));
      recvfrom(socketFd,buf,sizeof(buf),0,NULL,NULL);
      printf("From server: %s\n",buf);
      close(socketFd);
      return 0;
  }
  
  