Question

How to pass two dimensional (2D) fixed size array to function in C++

Answer 1

#include <iostream>
#include <array>

void display(const std::array<std::array<int, 4>, 3> &arr) {
    for (int i = 0; i < 3; i++) {
        for (int j = 0; j < 4; j++) {
            std::cout << arr[i][j] << " ";
        }
        std::cout << "\n";
    }
}
  
int main()
{
    std::array<std::array<int, 4>, 3> arr {{{1, 2, 3, 4},{5, 6, 7, 8},{9, 0, 11, 12}}};
  
    display(arr);
    
    return 0;
}
  
  
  
  
/*
run:
  
1 2 3 4 
5 6 7 8 
9 0 11 12 
  
*/

 

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