#include	"unp.h"intmain(int argc, char **argv){	int				sockfd, n;	char			recvline[MAXLINE + 1];	socklen_t		len;	struct sockaddr_storage	ss;	if (argc != 3)		err_quit("usage: daytimetcpcli <hostname/IPaddress> <service/port#>");	sockfd = Tcp_connect(argv[1], argv[2]);	len = sizeof(ss);	Getpeername(sockfd, (SA *)&ss, &len);	printf("connected to %s\n", Sock_ntop_host((SA *)&ss, len));	while ( (n = Read(sockfd, recvline, MAXLINE)) > 0) {		recvline[n] = 0;	/* null terminate */		Fputs(recvline, stdout);	}	exit(0);}