#include <stdio.h>
#include <stdlib.h>
#include <string.h>
 
#define ADDRESS     "tcp://mqtt.eclipse.org:1883"
#define CLIENTID    "ExampleClientSub"
#define TOPIC       "MQTT Examples"
#define PAYLOAD     "Hello World!"
#define QOS         1
#define TIMEOUT     10000L
 
 
{
    printf("Message with token value %d delivery confirmed\n", dt);
    deliveredtoken = dt;
}
 
{
    printf("Message arrived\n");
    printf("     topic: %s\n", topicName);
    return 1;
}
 
void connlost(void *context, char *cause)
{
    printf("\nConnection lost\n");
    printf("     cause: %s\n", cause);
}
 
int main(int argc, char* argv[])
{
    int rc;
 
    {
        printf("Failed to create client, return code %d\n", rc);
        rc = EXIT_FAILURE;
        goto exit;
    }
 
    {
        printf("Failed to set callbacks, return code %d\n", rc);
        rc = EXIT_FAILURE;
        goto destroy_exit;
    }
 
    {
        printf("Failed to connect, return code %d\n", rc);
        rc = EXIT_FAILURE;
        goto destroy_exit;
    }
 
    printf("Subscribing to topic %s\nfor client %s using QoS%d\n\n"
           "Press Q<Enter> to quit\n\n", TOPIC, CLIENTID, QOS);
    {
        printf("Failed to subscribe, return code %d\n", rc);
        rc = EXIT_FAILURE;
    }
    else
    {
        int ch;
        do
        {
                ch = getchar();
        } while (ch!='Q' && ch != 'q');
 
        {
                printf("Failed to unsubscribe, return code %d\n", rc);
                rc = EXIT_FAILURE;
        }
    }
 
    {
        printf("Failed to disconnect, return code %d\n", rc);
        rc = EXIT_FAILURE;
    }
destroy_exit:
exit:
    return rc;
}