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| Code Block |
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int average(int first, ...) {
size_t count = 0;
int sum = 0;
int i = first;
va_list marker;
va_start(marker, first);
while (i != -1) {
sum += i;
count++;
i = va_arg(marker, int);
}
va_end(marker);
return(sumcount ? (sum / count) : 0);
}
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Note that va_start() must always be called to initialize the argument list and va_end() must always be called when finished with a variable argument list.
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