﻿ C# Sharp Exercises: Find the sum of left diagonals of a matrix - w3resource

# 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 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 sum of left diagonals of a matrix :\n");
Console.Write("--------------------------------------------\n");

Console.Write("Input the size of the square matrix : ");
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);
}
}
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 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: