static void main(String[] args)
{
int?num2 = 45;
Rectangle r = new Rectangle();
r.length = 5;
r.width = 2;
r.Display();
int max = r.FindMax(r.length, r.width);
Console.ReadKey();
r.Factorial(4);
// Initialization of array
int [] marks = new int[5] {
1, 2, 3, 4, 5
};
for (int i = 0; i < 5; i++)
{
Console.WriteLine("Element {0}: {1}", i, marks[i]);
}
foreach (int j in n)
{
}
}