How to cast an int array to a byte array in c++

Question

hey i would like to know how you could cast an Int array in C++ to an byte array and what would be the declaration method. I would appreciate if it is simpler and no use of pointers. thanks for the comments

Please, look at https://stackoverflow.com/help/how-to-ask and at https://stackoverflow.com/help/mcve first. — Daniel Langr, Mar 29 '18 at 09:33
[Integer to byte Array conversion Code][1] [1]: https://stackoverflow.com/a/5585683/5250973 — Jay Dangar, Mar 29 '18 at 09:35
You will need to be more specific about your requirements. What do you envision the end result looking like? What have you tried so far? — Lightness Races in Orbit, Mar 29 '18 at 09:44

informant09 · Answer 1 · 2018-03-29T09:45:27.023

1

This solution is a bit less convenient but maybe a bit more understandable from your perspective:

std::array<int, 3> arr_ints = {1, 2, 3};
std::array<unsigned char, 3> arr_bytes;

for(unsigned i=0; i<arr_ints.size(); ++i)
    arr_bytes[i] = static_cast<unsigned char>(arr_ints[i]);

edited Mar 29 '18 at 09:45

answered Mar 29 '18 at 09:40

informant09

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`0 | arr_ints[i]`does not make much sense, does it? Is it intended to suppress a cast warning? Then a real cast would be much better. – user2328447 Mar 29 '18 at 09:43
Changed it to an explicit cast! – informant09 Mar 29 '18 at 09:45

How to cast an int array to a byte array in c++

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