August 2019
Intermediate to advanced
1074 pages
24h 28m
Chinese
Content preview from C# 7.0 核心技术指南（原书第7版）
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
C#
语言基础
｜
39
2.4.3 算术运算符
算式运算符（+、
-
、*、/、 %）可用于除 8 位和 16 位 的整数类型之外的所有数值
类型：
+ Addition
- Subtraction
* Multiplication
/ Division
% Remainder after division
2.4.4 自增和自减运算符
自增和自减运算符（++、--）分别给数值类型加 1 或者减 1。具体要将其放在变量之前
还是之后则取决于需要得到变量在自增 / 自减之前的值还是之后的值。例如：
int x = 0, y = 0;
Console.WriteLine (x++); // Outputs 0; x is now 1
Console.WriteLine (++y); // Outputs 1; y is now 1
2.4.5 特殊整数类型运算
（整数类型指 int、uint、long、ulong、short、ushort、byte 和 sbyte。）
2.4.5.1 整数除法
整数类型的除法运算总是会截断余数（向 0 舍入）。用一个值为 0 的变量做除数将产生运
行时错误（DivideByZeroException）：
int a = 2 / 3; // 0
int b = 0;
int c = 5 / b; // throws DivideByZeroException
用字面量式常量 0 做除数将产生编译时错误。
2.4.5.2 整数溢出
在运行时执行整数类型的算术运算可能会造成溢出。默认情况下，溢出会默默地发生 ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.