C#: Find the sum of rows an columns of a Matrix

C# Sharp Array: Exercise-25 with Solution

Write a C# Sharp program to find the sum of rows and columns in a matrix.

Sample Solution:-

C# Sharp Code:

using System;

public class Exercise25
{  
    public static void Main()
    {
        int i, j, n; // Declare variables for iteration and matrix size
        int[,] arr1 = new int[10, 10]; // Declare a 2D array to store the matrix
        int[] rsum = new int[10]; // Declare an array to store the sum of rows
        int[] csum = new int[10]; // Declare an array to store the sum of columns

        Console.Write("\n\nFind sum of row and column of a Matrix:\n");
        Console.Write("-------------------------------------------\n");

        Console.Write("Input the size of the square matrix : ");
        n = Convert.ToInt32(Console.ReadLine()); // Input the size of the square matrix

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

        Console.Write("The matrix is :\n");
        for (i = 0; i < n; i++)
        {
            for (j = 0; j < n; j++)
            {
                Console.Write("{0}  ", arr1[i, j]); // Display the matrix
            }
            Console.Write("\n");
        }

        /* Calculate sum of rows */
        for (i = 0; i < n; i++)
        {
            rsum[i] = 0; // Initialize sum for each row to zero
            for (j = 0; j < n; j++)
            {
                rsum[i] += arr1[i, j]; // Calculate sum of each row
            }
        }

        /* Calculate sum of columns */
        for (i = 0; i < n; i++)
        {
            csum[i] = 0; // Initialize sum for each column to zero
            for (j = 0; j < n; j++)
            {
                csum[i] += arr1[j, i]; // Calculate sum of each column
            }
        }

        Console.Write("The sum of row and column of the matrix :\n");
        for (i = 0; i < n; i++)
        {
            for (j = 0; j < n; j++)
            {
                Console.Write("{0}    ", arr1[i, j]); // Display the matrix elements
            }
            Console.Write("{0}    ", rsum[i]); // Display sum of each row
            Console.Write("\n");
        }

        // Display sum of each column separately
        for (j = 0; j < n; j++)
        {
            Console.Write("{0}   ", csum[j]);
        }
        Console.Write("\n\n");
    }	
}
  
  

Sample Output:

Find sum of row and column of a Matrix:                                                                        
 -------------------------------------------                                                                  
Input the size of the square matrix : 2                                                                       
Input elements in the matrix :                                                                                
element - [0],[0] : 2                                                                                         
element - [0],[1] : 4                                                                                         
element - [1],[0] : 6                                                                                         
element - [1],[1] : 8                                                                                         
The matrix is :                                                                                               
2  4                                                                                                          
6  8                                                                                                          
The sum of row and column of the matrix :                                                                
2    4    6                                                                                                   
6    8    14                                                                                                  
                                                                                                              
8   12

Flowchart:

C# Sharp Code Editor:

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