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template <class T, unsigned N>
unsigned size(T (&)[N]) { return N; }
template <class T, unsigned N>
unsigned size(T const (&)[N]) { return N; }
int main() {
short iarray[] = { 1, 2, 3, 4, 5 };
const short carray[] = { 1, 2, 3, 4, 5 };
return size(iarray) - size(carray);
}
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