Console.WriteLine("Before calling a method");
SayHello();
Console.WriteLine("After calling a method");

void SayHello() {
    Console.WriteLine("Hello World!");
}

void DisplayRandomNumbers01() {
    Random random = new Random();
}

void DisplayRandomNumbers02() {
    Random random = new Random();

    for (int i = 0; i < 5; i++) {
        Console.Write($"{random.Next(1, 100)} ");
    }
    Console.WriteLine();
}

void DisplayRandomNumbers03() {
    Random random = new Random();
    for (int i = 0; i < 5; i++) {
        Console.Write($"{random.Next(1, 100)} ");
    }
    Console.WriteLine();
}

Console.WriteLine("\nGenerating random numbers:");
DisplayRandomNumbers01();
DisplayRandomNumbers02();
DisplayRandomNumbers03();