Question

How to combine two 2D arrays by summing element‑by‑element in C#

Answer 1

using System;

class Program
{
    static void Main()
    {
        int[,] a = {
            { 1, 2 },
            { 3, 4 }
        };

        int[,] b = {
            { 10, 20 },
            { 30, 40 }
        };

        int rows = a.GetLength(0);
        int cols = a.GetLength(1);

        int[,] merged = new int[rows, cols];

        for (int i = 0; i < rows; i++)
            for (int j = 0; j < cols; j++)
                merged[i, j] = a[i, j] + b[i, j];

        Print(merged);
    }

    static void Print(int[,] arr) {
        for (int i = 0; i < arr.GetLength(0); i++) {
            for (int j = 0; j < arr.GetLength(1); j++)
                Console.Write(arr[i, j] + " ");
            Console.WriteLine();
        }
    }
}



/*
run:

11 22 
33 44  

*/

 

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