#include	<stdio.h>

#define	MAXLINE		255

main()
{
	FILE	*fp;
	char	line[MAXLINE];

	if ( (fp = popen("/bin/pwd", "r")) == NULL)
		err_sys("popen error");

	if (fgets(line, MAXLINE, fp) == NULL)
		err_sys("fgets error");

	printf("%s", line);	/* pwd inserts the newline */

	pclose(fp);
	exit(0);
}