static void Main(string[] args)
{
Console.WriteLine("Hello World!"); //create a Hello World program in C#
//Reference type
Triangle triangle = new Triangle();
triangle.a = 4;
triangle.b = 4;
triangle.c = 6;
Console.WriteLine("First triangle perimeter: " + Triangle.perimeter(triangle.a, triangle.b, triangle.c));
Triangle.Display(triangle.c);
Triangle.numberOfObjects();
Triangle triangle1 = new Triangle();
triangle1.b = 5;
Console.WriteLine("Second triangle perimeter: " + Triangle.perimeter(triangle1.a, triangle1.b, triangle1.c));
Triangle.Display(triangle1.c);
//display the number of objects create-->using a static method
Triangle.numberOfObjects();
Console.WriteLine("Number of objects: " + Triangle.count);
//use of boxing and unboxing
int number = Triangle.count;
object obj = number; //boxing
Console.WriteLine(obj);
int number2 = (int)obj; //unboxing
Console.WriteLine(number2);
Console.WriteLine(triangle.a + " " + triangle.b + " " + triangle.c);
Console.WriteLine(triangle1.a + " " + triangle1.b + " " + triangle1.c);
//Value type
Console.WriteLine("");
Console.WriteLine("Value type");
rightAngle rightAngle = new rightAngle();
rightAngle.l = 2;
rightAngle.L = 5;
rightAngle rightAngle1 = new rightAngle();
rightAngle1.l = 3;
Console.WriteLine(rightAngle.l + " " + rightAngle.L);
Console.WriteLine(rightAngle1.l + " " + rightAngle1.L);
//ref modifier
int x = 3;
Adder(ref x);
Console.WriteLine("x after the function call with ref value: " + x);
//out modifier
int y = 9;
Adder2(out y);
Console.WriteLine("y after the function call with out value: " + y);
Console.ReadKey();
}