C# 之委托的多播

delegate void NumberCalculator(int a);
    class Program
    {
        static int num1 = 100;
        static void Main(string[] args)
        {
            /*1、委托的多播*/
            NumberCalculator delegates;
            NumberCalculator addCalculator = new NumberCalculator(Add);
            NumberCalculator multiplyCalculator = new NumberCalculator(Multiply);
            delegates = addCalculator;
            delegates += multiplyCalculator;
            GetNum(delegates);

        }

        //加法
        static void Add(int a)
        {
            num1 = a + num1;
        }
        //乘法
        static void Multiply(int c)
        {
            num1 = num1 * c;
        }

        //调用委托得到结果及打印
        static void GetNum(NumberCalculator numberCalculator) {
            numberCalculator(num1);
            Console.WriteLine(num1);
        }
    }