Question

How to declare array size with constexpr in c++

Answer 1

// constexpr is a value that will not change (static) and is set at the compilation time

#include <iostream>

constexpr int size = 4;

int main()
{
    int arr[size] = {3, 9, 8, 1};
    
   for (int i = 0; i < size; i++) {
        std::cout << arr[i] << "\n";
    }
}


/*
run:

3
9
8
1

*/

 

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