# C# Program to perform Matrix Addition

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In the following example, we will add the two given matrices (two-dimensional arrays).

### Example

C# Compiler
using System; namespace myApp { class Program { static void Main(string[] args) { int i, j; int[,] arr1 = { {1, 1, 1}, {1, 1, 1}, {1, 1, 1} }; int[,] arr2 = { {2, 2, 2}, {2, 2, 2}, {2, 2, 2} }; int[,] arr3 = new int[3, 3]; Console.WriteLine("Matrix A (3 x 3):"); for(i=0; i<3; i++) { for(j=0; j<3; j++) Console.Write("{0} ", arr1[i, j]); Console.WriteLine(); } Console.WriteLine("\nMatrix B (3 x 3):"); for(i=0; i<3; i++) { for(j=0; j<3; j++) Console.Write("{0} ", arr2[i, j]); Console.WriteLine(); } Console.WriteLine("\nMatrix Additon (A + B):"); for(i=0; i<3; i++) { for(j=0; j<3; j++) { arr3[i, j] = arr1[i, j] + arr2[i, j]; Console.Write("{0} ", arr3[i, j]); } Console.WriteLine(); } } } }

### Output

Matrix A (3 x 3): 1 1 1 1 1 1 1 1 1 Matrix B (3 x 3): 2 2 2 2 2 2 2 2 2 Matrix Additon (A + B): 3 3 3 3 3 3 3 3 3

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