write a simple algorithm problem and solve it in c#

**Problem Statement:**

Write a C# program that takes an array of integers as input and returns the sum of all even numbers in the array.

### Example:

Input: `[1, 2, 3, 4, 5]`

Output: `6` (since `2 + 4 = 6`)

### C# Solution:

csharp

using System;

class Program

{

static void Main(string[] args)

{

int[] numbers = { 1, 2, 3, 4, 5 };

// Call the function to get the sum of even numbers

int result = SumOfEvenNumbers(numbers);

Console.WriteLine("Sum of Even Numbers: " + result); // Output will be 6

}

static int SumOfEvenNumbers(int[] numbers)

{

int sum = 0;

foreach (int number in numbers)

{

if (number % 2 == 0) // Check if the number is even

sum += number;

}

return sum;

}

}

`

### Explanation:

1. **Main Method:**

- We define an array of integers `numbers`.

- Call the function `SumOfEvenNumbers` and store its result in a variable.

- Print out the sum of even numbers.

2. **SumOfEvenNumbers Function:**

- Initialize a variable `sum` to 0, which will hold the cumulative sum.

- Use a loop (`foreach`) through each number in the array.

- Inside the loop, check if the current number is even by using `number % 2 == 0`.

If it's true (i.e., an even number), add this number to our sum.

- After the loop, return the computed `sum`.

This solution iterates through each element in the array once and checks if it's even. If so, adds it to a running total of even numbers. Finally, returns this sum.

### Running the Code:

To run this code in your local environment:

1. Create a new C# Console Application project.

2. Replace or copy-paste the above code into Program.cs file of your newly created console application.

3. Run it, and you should see "Sum of Even Numbers: 6" printed in the output window.

This is a straightforward example to get started with basic C# programming.