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31 lines
943 B
31 lines
943 B
#include "zhelpers.h"
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int main(int argc, char *argv[])
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{
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void *context = zmq_init(1);
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printf("Collecting updates from weather server...\n");
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void *subscriber = zmq_socket(context, ZMQ_SUB);
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zmq_connect(subscriber, "tcp://localhost:5556");
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// Subscribe to zipcode, default is NYC, 10001
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char *filter = (argc > 1) ? argv[1]: "10001";
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zmq_setsockopt(subscriber, ZMQ_SUBSCRIBE, filter, strlen(filter));
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int update_nbr;
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long total_temp = 0;
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for (update_nbr = 0; update_nbr < 100; update_nbr++) {
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char *string = s_recv(subscriber);
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int zipcode, temperature, relhumidity;
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sscanf(string, "%d %d %d", &zipcode, &temperature, &relhumidity);
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total_temp += temperature;
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free(string);
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}
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printf("Average temperature for zipcode '%s' was %dF\n",
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filter, (int)(total_temp / update_nbr));
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zmq_close(subscriber);
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zmq_term(context);
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return 0;
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}
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