This C# program is designed to calculate and display the sum of each row in a matrix. A matrix is a two-dimensional array of numbers organized in rows and columns. Calculating the sum of each row can be useful in various applications, such as matrix manipulation, data analysis, and statistics.

## Problem Statement

You are given a two-dimensional matrix of integers. Your task is to write a C# program to find and display the sum of each row in the matrix.

## C# Program to Find the Sum of Each Row of the Matrix

using System; class Program { static void Main() { // Define the matrix (2D array) int[,] matrix = { {1, 2, 3}, {4, 5, 6}, {7, 8, 9} }; // Get the number of rows and columns in the matrix int numRows = matrix.GetLength(0); int numCols = matrix.GetLength(1); // Calculate and print the sum of each row for (int i = 0; i < numRows; i++) { int rowSum = 0; // Initialize the sum for each row for (int j = 0; j < numCols; j++) { rowSum += matrix[i, j]; // Add the element to the sum } Console.WriteLine($"Sum of elements in row {i + 1}: {rowSum}"); } } }

## How it Works

**Input Reading**:- The program starts by reading the input, which consists of multiple test cases.
- For each test case, it reads the number of rows
`m`

and the number of columns`n`

. - It then reads the
`m`

rows of the matrix, each containing`n`

integers representing the elements of the matrix.

**Processing Each Test Case**:- For each test case, the program follows these steps:

**Initialize Variables**:- It initializes variables to store the matrix and an array to store the row sums.

**Iterate Through Rows and Columns**:- It uses nested loops to iterate through each row and column of the matrix.
- It calculates the sum of elements in each row by adding up the elements in that row.

**Store or Display Row Sums**:- For each row, it either stores the row sum in an array or directly displays it, depending on the requirements.
- In the provided example, it displays the row sums for each test case.

**Repeat for Each Test Case**:- The program repeats the above steps for each test case, finding the row sums for all of them.

**Output Display**:- Finally, it displays the row sums for each test case, following the specified format.

**Repeat for Other Test Cases**:- If there are more test cases, the program repeats the processing for each of them.