27 lines
397 B
C
27 lines
397 B
C
#include <stdio.h>
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typedef struct
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{
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double average;
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int count;
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}
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stats_type;
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static void
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testc (stats_type *s, long long data)
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{
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s->average = (s->average * s->count + data) / (s->count + 1);
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s->count++;
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}
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int main (void)
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{
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stats_type s;
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s.average = 0;
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s.count = 0;
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testc (&s, 10);
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testc (&s, 20);
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printf ("%g %d\n", s.average, s.count);
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return 0;
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}
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