C#: Read a 2D array of size 3x3 and print the matrix

Last update on August 22 2025 12:42:24 (UTC/GMT +8 hours)

Write a program in C# Sharp for a 2D array of size 3x3 and print the matrix.

Sample Solution:-

C# Sharp Code:

using System;

public class Exercise14  
{  
    public static void Main() 
    {
        int i, j; // Declare variables for row and column indices
        int[,] arr1 = new int[3, 3]; // Declare a 2D array of size 3x3 to store integers

        // Display a message prompting the user to input elements for a 3x3 matrix
        Console.Write("\n\nRead a 2D array of size 3x3 and print the matrix :\n");
        Console.Write("------------------------------------------------------\n");  

        // Input elements into the matrix
        Console.Write("Input elements in the matrix :\n");
        for (i = 0; i < 3; i++)
        {
            for (j = 0; j < 3; j++)
            {
                Console.Write("element - [{0},{1}] : ", i, j);
                arr1[i, j] = Convert.ToInt32(Console.ReadLine()); // Store user input in the 2D array
            }
        }  

        // Display the matrix
        Console.Write("\nThe matrix is : \n");
        for (i = 0; i < 3; i++)
        {
            Console.Write("\n");
            for (j = 0; j < 3; j++)
            {
                Console.Write("{0}\t", arr1[i, j]); // Print elements of the 2D array
            }
        }
        Console.Write("\n\n");
    }
}

Sample Output:

Read a 2D array of size 3x3 and print the matrix :                                                            
------------------------------------------------------                                                        
Input elements in the matrix :                                                                                
element - [0,0] : 1                                                                                           
element - [0,1] : 2                                                                                           
element - [0,2] : 3                                                                                           
element - [1,0] : 4                                                                                           
element - [1,1] : 5                                                                                           
element - [1,2] : 6                                                                                           
element - [2,0] : 7                                                                                           
element - [2,1] : 8                                                                                           
element - [2,2] : 9                                                                                           
                                                                                                              
The matrix is :                                                                                               
                                                                                                              
1       2       3                                                                                             
4       5       6                                                                                             
7       8       9

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