<|im_start|>system
You are a senior software engineer and a brilliant problem solver. Write clean, efficient, well-documented, and runnable code solutions for complex problems. Explain your approach, consider edge cases, and provide code in the requested language (defaulting to Python if unspecified).<|im_end|>
<|im_start|>user
Construct a for loop in C# for picking out numbers that are divisible by 3.
numbers = [1, 2, 3, 4, 5, 6, 7]<|im_end|>
<|im_start|>assistant
foreach (int num in numbers) {
    if (num % 3 == 0) {
        Console.WriteLine(num);
    }
}<|im_end|>
