BSD 4_1_snap release

[unix-history] / usr / src / cmd / gets.c

static char *sccsid = "@(#)gets.c       4.2 (Berkeley) 6/19/81";
#include <stdio.h>

/*
* gets [ default ]
*
*      read a line from standard input, echoing to std output
*      if an error occurs just return "default"
*      if no default and error exit abnormally
*/
main(argc, argv)
       int argc;
       char *argv[];
{
       char buf[BUFSIZ];
       
       setbuf(stdin, NULL);
       if (gets(buf) == NULL || buf[0] < ' ') {
               if (argc == 1)
                       exit(1);
               strcpy(buf,argv[1]);
       }
       printf("%s\n", buf);
       exit(0);
}