C# Sharp Exercises: Find the sum of left diagonals of a matrix

C# Sharp Array: Exercise-24 with Solution

Write a program in C# Sharp to find the sum of left diagonals of a matrix.

Sample Solution:-

C# Sharp Code:

using System;  
public class Exercise24 
{  
    public static void Main()
 
   {
     int i,j,sum=0,n,m=0;
	 int[,] arr1 = new int[50,50];

	 
       Console.Write("\n\nFind the sum of left diagonals of a matrix :\n");
       Console.Write("--------------------------------------------\n");	 
	 
	 Console.Write("Input the size of the square matrix : ");
	 n=Convert.ToInt32(Console.ReadLine());
         m=n;
	 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());
            }
        }  
	 Console.Write("The matrix is :\n");
	 for(i=0;i<n;i++)
	 {
	   for(j=0;j<n ;j++)
	     Console.Write("{0}  ",arr1[i,j]);
	     Console.Write("\n");
	 }
// calculate the sum of left diagonals
	 for(i=0;i<n;i++)
	 {
           m=m-1;
	   for(j=0;j<n ;j++)
            {
              if (j==m) 
                {
                  sum= sum+arr1[i,j];
                }
              
            }
	 }
       Console.Write("Addition of the  left Diagonal elements is :{0}\n",sum);
	   }
    }
	
	

Sample Output:

Find the sum of left diagonals 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] : 5                                                                                         
element - [1],[1] : 6                                                                                         
The matrix is :                                                                                               
2  4                                                                                                          
5  6                                                                                                          
Addition of the  left Diagonal elements is :9 

Flowchart:

C# Sharp Code Editor:

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