Why?? (prog question)

[William Gordon Rutherdale]

This isn't a BSD question.  It's just about elementary C.  As other 
people pointed out, you could have easily caught it anyway just by 
turning on warnings.

-Will

Gary Kline wrote:
> people, i've been under the weather for days and will probably be for a few more.
> new  and TEMPORARY meds dont like me, ugh.
>
> can anybody clue me in why the followin joinline program fails to catch if argc == 1?
>
>
> /*
>  * simple prog to join all | very nearly all lines of a text file that 
>  * make up one paragraph into one LONG line.  
>  *
>  * paragraphs are delimiated by a single \n break.
>  */
>
> #include <stdio.h>
> #include <string.h>
> #include <stdlib.h>
>
> main(int argc, char argv[])
> {
>    char buf[65536];
>
>    if (argc == 1)
>    {
> 	printf("Usage: %s < file > newfile\n", argv[0]);
> 	exit (-1);
>    }
>    while (fgets(buf, sizeof buf, stdin) )
>    {
>      if (*buf == '\n')
>      {
>        fprintf(stdout, "\n\n");
>      }
>      else
>      {
>        buf[strlen(buf)-1] = ' ';
>        fputs(buf, stdout);
>      }
>    }
> }
>
>
>