static void Main(string[] args)
{
calAreapointer cptr = new calAreapointer(calArea);
calAreapointer cptr1 = new calAreapointer(delegate(double r) { return(3.14 * r * r); });//anonymous method
double area = cptr(12);
Console.WriteLine(area);
//above code can be simplified with lambda
calAreapointer cptr2 = (r => 3.14 * r * r);
double real = cptr1(10);
Console.WriteLine(real);
//prebuild delegats Func<>,Action<>,Predicate<>
Func <double, double> f1 = (r => 3.14 * r * r);
double area2 = f1(14);
Console.WriteLine(area2);
Action <string> act = (x => Console.WriteLine(x));
act("welcome");
Predicate <string> pt = (y => y.Length > 3);
Console.WriteLine(pt("cts"));
//methods which are using built in delegats
int[] array = new int[] { 1, 2, 3, 4 };
List <string> names = new List <string>();
names.Add("anil");
names.Add("mani");
names.Add("navya");
int b = array.Count(x => x > 1);
Console.WriteLine(b);
List <string> sn = names.FindAll(y => y.Contains('l'));
foreach (string n in sn)
{
Console.WriteLine(n);
}
Console.ReadKey();
}
static void Main(string[] args)
{
Program p = new Program();
// deligatepointer mydeligate = new deligatepointer();
deligatepointer mydeligate = p.print;
mydeligate += p.display;//multicaste delegates
mydeligate();
mydeligate -= p.print;
mydeligate();
calAreapointer ca = calculator.calArea;
ca += calculator.caldistance;
Console.WriteLine("enter the area ");
int s = int.Parse(Console.ReadLine());
double area = ca(s);
Console.WriteLine(area);
}
static void Main(string[] args)
{
Console.WriteLine("hello world");
//delegatePointer mydelegate = new delegatePointer(print);
Program p = new Program();
delegatePointer mydelegate = p.print;
mydelegate += p.display;
mydelegate();
mydelegate -= p.print;
mydelegate();
Calculate c = new Calculate();
calAreapointer cptr = c.calArea;
double area = cptr(20);
cptr += Calculate.caldistance;
Console.WriteLine(area);
Console.ReadKey();
}
static void Main(string[] args)
{
Console.WriteLine("hello");
Program p = new Program();
delegatepointer mydelegate = p.print;
mydelegate();
mydelegate += p.display;
// mydelegate();
mydelegate -= p.print;
mydelegate();
calAreapointer c = calculate.calArea;
double area = c(56);
Console.WriteLine(area);
c += calculate.calArea1;
double area1 = c(56);
Console.WriteLine(area1);
Console.ReadLine();
}
