#include "apue.h"#include <time.h>intmain(void){	time_t		caltime;	struct tm	*tm;	char		line[MAXLINE];	if ((caltime = time(NULL)) == -1)		err_sys("time error");	if ((tm = localtime(&caltime)) == NULL)		err_sys("localtime error");	if (strftime(line, MAXLINE, "%a %b %d %X %Z %Y\n", tm) == 0)		err_sys("strftime error");	fputs(line, stdout);	exit(0);}