Sum of Left Daignol elements of a Matrix

Matrix_Questions/leftDaignol.cpp

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+/**
+ * @file leftDaignol.cpp
+ * @author your name ([email protected])
+ * @brief
+ * @version 0.1
+ * @date 2024-03-12
+ *
+ * @copyright Copyright (c) 2024
+ * Write a program in C to find the sum of the left diagonals of a matrix.
+Test Data :
+Input the size of the square matrix : 2
+Input elements in the first matrix :
+element - [0],[0] : 1
+element - [0],[1] : 2
+element - [1],[0] : 3
+element - [1],[1] : 4
+Expected Output :
+The matrix is :
+1 2
+3 4
+Addition of the left Diagonal elements is :5
+ */
+
+#include <bits/stdc++.h>
+using namespace std;
+int main()
+{
+    int n;
+    cout << "Enter size of Matrix: ";
+    cin >> n;
+    int arr[n][n];
+    int sum = 0;
+    for (int i = 0; i < n; i++)
+    {
+        for (int j = 0; j < n; j++)
+        {
+            cout << "Enter element of array at " << i << " " << j << " : ";
+            cin >> arr[i][j];
+        }
+        cout << endl;
+    }
+    cout << endl;
+
+    for (int i = 0; i < n; i++)
+    {
+        for (int j = 0; j < n; j++)
+        {
+            if (i == j)
+            {
+                sum += arr[i][j];
+            }
+        }
+    }
+    cout << "Addition of the left Diagonal elements is : " << sum;
+}
+/**
+ * @brief
+ * Enter size of Matrix: 3
+Enter element of array at 0 0 : 1
+Enter element of array at 0 1 : 2
+Enter element of array at 0 2 : 3
+
+Enter element of array at 1 0 : 4
+Enter element of array at 1 1 : 5
+Enter element of array at 1 2 : 6
+
+Enter element of array at 2 0 : 7
+Enter element of array at 2 1 : 8
+Enter element of array at 2 2 : 9
+
+
+Addition of the left Diagonal elements is : 15
+ *
+ */