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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 302997643 by yifangt on Wednesday 17th of May 2017 04:14:52 PM
Old 05-17-2017
I think I can get the logic part, but not the 'ee' from Test to Teest'.
I re-wrote the code to avoid any possible confusion just simply printing each char twice:
Code:
#include <stdio.h>
#include <stdlib.h>

/*Print a char twice like putchar, return char if successful, or EOF on error.*/

int putcharTwice(int c)
{
    if (putchar(c) == EOF || putchar(c) == EOF)  {
    return EOF;
    } else {
    putchar(c);  //explicit printing
    putchar(c);  //explicit printing
    return 0;
    }
}

int main(int argc, char **argv)
{
    int c;

    while ((c = getchar()) != EOF) {
    putcharTwice(c); 
     }
    return 0;
}

but the code actually print each char FOUR times!
Code:
$ echo Test | ./a.out
TTTTeeeesssstttt.

Apparently every last two repeats are from the explicit printing. Where are the first two repeats from?
Sorry for my slow catch!
Last edited by yifangt; 05-17-2017 at 05:27 PM..
 

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ocf_heartbeat_pure-ftpd

OCF_HEARTBEAT_PURE-(7)						OCF resource agents					    OCF_HEARTBEAT_PURE-(7)

NAME

       ocf_heartbeat_Pure-FTPd - Manages a Pure-FTPd FTP server instance

SYNOPSIS

       Pure-FTPd [start | stop | monitor | validate-all | meta-data]

DESCRIPTION

       This script manages Pure-FTPd in an Active-Passive setup

SUPPORTED PARAMETERS

       script
	   The full path to the Pure-FTPd startup script. For example, "/sbin/pure-config.pl" (optional, string, default /sbin/pure-config.pl)

       conffile
	   The Pure-FTPd configuration file name with full path. For example, "/etc/pure-ftpd/pure-ftpd.conf" (optional, string, default
	   /etc/pure-ftpd/pure-ftpd.conf)

       daemon_type
	   The Pure-FTPd daemon to be called by pure-ftpd-wrapper. Valid options are "" for pure-ftpd, "mysql" for pure-ftpd-mysql, "postgresql"
	   for pure-ftpd-postgresql and "ldap" for pure-ftpd-ldap (optional, string, no default)

       pidfile
	   PID file (optional, string, default /var/run/resource-agents/pure-ftpd-default.pid)

SUPPORTED ACTIONS

       This resource agent supports the following actions (operations):

       start
	   Starts the resource. Suggested minimum timeout: 20s.

       stop
	   Stops the resource. Suggested minimum timeout: 20s.

       monitor
	   Performs a detailed status check. Suggested minimum timeout: 20s. Suggested interval: 60s.

       validate-all
	   Performs a validation of the resource configuration. Suggested minimum timeout: 20s.

       meta-data
	   Retrieves resource agent metadata (internal use only). Suggested minimum timeout: 5s.

EXAMPLE

       The following is an example configuration for a Pure-FTPd resource using the crm(8) shell:

	   primitive example_Pure-FTPd ocf:heartbeat:Pure-FTPd 

	     op monitor depth="0" timeout="20s" interval="60s"

SEE ALSO

       http://www.linux-ha.org/wiki/Pure-FTPd_(resource_agent)

AUTHOR

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resource-agents 1.0.3						    07/05/2010						    OCF_HEARTBEAT_PURE-(7)
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