BSD 2 development

[unix-history] / src / num.c

/* Copyright (c) 1979 Regents of the University of California */
#include "stdio.h"
/*
* number - a cat like program which prints lines like the editor '#'' command
*
* Bill Joy UCB June 28, 1977
*/

int     lino;

main(argc, argv)
       int argc;
       char *argv[];
{
       register c;
       register lastc;

       argc--, argv++;
       do {
               if (argc > 0) {
                       if (freopen(argv[0], "r", stdin) == NULL) {
                               perror(argv[0]);
                               exit(1);
                       }
                       argc--, argv++;
               }
               lastc = '\n';
               for (;;) {
                       c = getchar();
                       if (c == -1)
                               break;
                       if (lastc == '\n')
                               printf("%6d  ", ++lino);
                       lastc = c;
                       putchar(c);
               }
       } while (argc > 0);
       exit(0);
}