[網設]C#筆記.例外處裡

這篇是Exception 的Try 跟Catch的始用範例

後面是運算子的示範

using System;
using System.Collections.Generic;
using System.Text;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            int a, b;
           
                Console.Write("Please input 2 numbers\n");
            try
            {
                a = Convert.ToInt32(Console.ReadLine());
                b = Convert.ToInt32(Console.ReadLine());
                Console.WriteLine(a / b);
            }
            catch(DivideByZeroException)
            {
                Console.WriteLine("\nDivided by Zero !!");
            }
            catch (FormatException)
            {
                Console.Write("\ninput error!!");
            }
        }
    }

    public  class complex_number
    {
        public double real_number;
        public double i_number;
        public complex_number(double a, double b)
        {
            real_number = a;
            i_number = b;
        }
        public double Real
        {
            set
            {
                real_number = value;
            }
            get
            {
                return real_number;
            }
        }
        public double I_num
        {
            set
            {
                i_number = value;
            }
            get
            {
                return i_number;
            }
        }
        public static complex_number operator +(complex_number a,complex_number b)
        {
            return new complex_number(a.real_number+b.real_number,a.i_number+b.i_number);
        }
        public static complex_number operator -(complex_number a, complex_number b)
        {
            return new complex_number(a.real_number - b.real_number, a.i_number - b.i_number);
        }
        public static complex_number operator *(complex_number a, complex_number b)
        {
            return new complex_number(a.real_number * b.real_number, a.i_number * b.i_number);
        }
        public static complex_number operator /(complex_number a, complex_number b)
        {
            return new complex_number(a.real_number / b.real_number, a.i_number / b.i_number);
        }
    }
   
}