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  1.  
  2. #include <iostream>
  3. template<class T, size_t N>
  4. size_t size(T (&)[N]) { return N; }
  5.  
  6. int main()
  7. {
  8.  int arr[42];
  9.  std::cout << size(arr);  
  10. }
Success #stdin #stdout 0s 2684KB
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Standard input is empty
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42
https://ideone.com/o00cAk
language:
C++ 4.3.2 (gcc-4.3.2)
created:
10 years ago
visibility:
public

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