static void Main(string[] args)
{
int x = 10, y = 23;
DCasio casioMul = new DCasio(MyMaths.Mult);
casioMul(x, y);
Console.WriteLine();
MyMaths oMath = new MyMaths();
DCasio casioAdd = new DCasio(oMath.Add);
casioAdd(x, y);
Console.WriteLine();
//1 delegate co the chua dia chi cua nhieu ham
DCasio casio = new DCasio(MyMaths.Mult);
casio += oMath.Add;
casio += oMath.Sub;
casio(x, y);
Console.WriteLine();
//Bo bot ham Add
casio -= oMath.Add;
casio(x, y);
Console.ReadKey();
}
public void test()
{
DCasio casio = delegate(int x, int y)
{
int r = x + y;
Console.WriteLine($"{x} + {y} = {r} ");
};
casio += delegate(int x, int y)
{
int r = x * y;
Console.WriteLine($"{x} * {y} = {r} ");
};
casio(10, 4);
}
internal void demo_anonymous_method()
{
DCasio m = delegate(int n)
{
long r = 1;
for (int i = 1; i <= n; i++)
{
r *= i;
}
return(r);
};
Console.Write(" nhap 1 so nguyen duong bat ky : ");
int x = int.Parse(Console.ReadLine().Trim());
//tinh va in ra giai thua cua x
Console.WriteLine($" {x}! = {m(x)}. ");
}
