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Full Discussion: Pure C function pointer on printing vowels twice
Top Forums Programming Pure C function pointer on printing vowels twice Post 302997624 by yifangt on Wednesday 17th of May 2017 12:42:41 PM
Old 05-17-2017
Thanks Don! I seem to get closer to understand it. With a simpler test, here is my dissection of the execution:
Code:
 $ echo Test | ./a.out 
table['T'] ~~> putchar('T');  
table['e'] ~~> putcharTwice('e');  
table['s'] ~~> putchar('s');
table['t'] ~~> putchar('t');

but I still did not get how putcharTwice( int c) print the chars (now vowels only) twice.
For putcharTwice('e'): (putchar('e') == EOF || putchar('e') == EOF) becomes (0 || 0) so that the else block is executed to return 'e'; but how is 'e' printed twice to have ee with this function?

Thanks again!
Last edited by yifangt; 05-17-2017 at 01:45 PM.. Reason: typo
 

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LEARN ABOUT DEBIAN

pure-statsdecode

pure-statsdecode(8)						     Pure-FTPd						       pure-statsdecode(8)

NAME

       pure-statsdecode - Show human-readable dates from a "stats" logfile

SYNTAX

       pure-statsdecode filename
       pure-statsdecode -

DESCRIPTION

       This program decodes Pure-FTPd's "stats" log files and converts timestamps into human-readable dates.

OPTIONS

       -      means to read the standard input.

       filename
	      is a log file produced with pure-ftpd -O ftpstats:/path/to/logfile

EXAMPLES

       To run this program the standard way type:

       pure-statsdecode /var/log/pureftpd.log > /tmp/pureftpd.humanlog

       Alternativly you can run it as:

       cat /var/log/pureftpd.log | pure-statsdecode - | gzip --best > /tmp/pureftpd.humanlog.gz

AUTHORS

       Frank DENIS <j at pureftpd dot org>

SEE ALSO

       ftp(1), pure-ftpd(8) pure-ftpwho(8) pure-mrtginfo(8) pure-uploadscript(8) pure-statsdecode(8) pure-pw(8) pure-quotacheck(8) pure-authd(8)

       RFC 959, RFC 2228, RFC 2389 and RFC 2428.

Pure-FTPd team							      1.0.36						       pure-statsdecode(8)
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