第七讲 练习代码

第七讲  数据类型转换

——隐式、显式、上下文溢出

 

namespace ConsoleApp1

{

    class Program

    {

        static void Main(string[] args)

        {

            //（1）隐式转换

            //无符号的整数转换

            byte a = 10;

            ushort b = a;

            Console.WriteLine(b);  //b=10

 

            //有符号的整数转换

            sbyte c = 10;

            short d = c;

            Console.WriteLine(d); //d=10

            //负数

            sbyte e = -10;

            short f = e;

            Console.WriteLine(f); //f=-10

            Console.ReadLine();

            //（2）显式转换

            ushort i = 1365;

            byte j = (byte)i;

            Console.WriteLine(j); //结果是85

            Console.ReadLine();

 

            //(3)上下文溢出检查

            ushort m = 2000;

            byte n = unchecked((byte)m);

            //byte n = checked((byte)m);

            Console.WriteLine($"n={n}"); //n=208

            Console.ReadLine();  

            checked

            {

                //多条类型转换

                //多条类型转换

                //多条类型转换

            }

        } }}