Computer disks (large and small) have internal drives that store data. Key components in the drives are the “heads” that actually read/write the data. Heads are manufactured in clean rooms by a series of steps that deposit layers of materials on a wafer, and pattern those layers using photolithography and etching. During the processing the wafers are inspected and, when processing is finished, the devices are tested. As a result of the manufacturing process, a head could have 2 active elements that are:
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2015-01-19 13:46:27
background
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2014-01-16 08:17:50
代写程序 控制结构
Statements execute sequentially: The first statement in a function is executed first, followed by the second, and so on. Of course, few programsincluding the one we'll need to write to solve our bookstore problemcan be written using only sequential execution. Instead, programming languages provide various control structures that allow for more complicated execution paths. This section will take a brief look at some of the control structures provided by C++. Chapter 6 covers statements in detail.
语句总是顺序执行的：函数的第一条语句首先执行，接着是第二条，依次类推。当然，少数程序——包括我们将要编写的解决书店问题的程序——可以仅用顺序执行语句编写。事实上，程序设计语言提供了多种控制结构支持更为复杂的执行路径。本节将简要地介绍 C++ 提供的控制结构，第六章再详细介绍各种语句。
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2014-01-15 08:10:55
代写程序 关于注释
Before our programs get much more complicated, we should see how C++ handles comments. Comments help the human readers of our programs. They are typically used to summarize an algorithm, identify the purpose of a variable, or clarify an otherwise obscure segment of code. Comments do not increase the size of the executable program. The compiler ignores all comments.
在程序变得更复杂之前，我们应该明白C++如何处理注释。注释可以帮助其他人阅读程序，通常用于概括算法、确认变量的用途或者阐明难以理解的代码段。注释并不会增加可执行程序的大小，编译器会忽略所有注释。
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2014-01-14 08:16:08
代写程序 初窥输入/输出
1.2. A First Look at Input/Output 1.2. 初窥输入/输出C++ does not directly define any statements to do input or output (IO). Instead, IO is provided by the standard library. The IO library provides an extensive set offacilities. However, for many purposes, including the examples in this book, one needs to know only a few basic concepts and operations. C++ 并没有直接定义进行输入或输出（IO）的任何语句，这种功能是由标准库提供的。IO 库提供了大量的设施。然而，对许多应用，包括本书的例子而言，编程者只需要了解一些基本概念和操作。 Most of the examples in this book use the iostream library, which handles formatted input and output. Fundamental to the iostream library are two types named istream and ostream, which represent input and output streams, respectively. A stream is a sequence of characters intended to be read from or written to an IO device of some kind. The term "stream" is intended to suggest that the characters are generated, or consumed, sequentially over time. 本书的大多数例子都使用了处理格式化输入和输出的 iostream 库。iostream 库的基础是两种命名为 istream 和 ostream 的类型，分别表示输入流和输出流。流是指要从某种 IO 设备上读入或写出的字符序列。术语“流”试图说明字符是随着时间顺序生成或消耗的。 |
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2014-01-13 09:39:00
代写程序 编写简单的 C++ 程序
1.1. Writing a Simple C++ Program 1.1. 编写简单的 C++ 程序 Every C++ program contains one or more functions, one of which must be named main. A function consists of a sequence of statements that
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2013-06-15 08:36:34
C语言中define的用法
define是C语言中的预处理命令，它用于宏定义，可以提高源代码的可读性，为编程提供方便。
预处理命令以“#”号开头，如包含命令#include，宏定义命令#define等。一般都放在源文件的前面，它们称为预处理部分。
所谓预处理是指在进行编译之前所作的工作。预处理是C语言的一个重要功能，它由预处理程序负责完成。当对一个源文件进行编译时，系统将自动引用预处理程序对源程序中的预处理部分作处理，处理完毕自动进入对源程序的编译。
宏的定义
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2013-06-15 08:30:20
Linux的C开发环境的构成和安装
本文介绍了Linux的C开发环境的构成和安装，使读者对Linux的C开发环境能有初步的了解。
你了解Linux吗？相信现在越来越多的人会说“是”的。那么你了解到何种程度呢？不可否认，目前决大多 数的Linux用户对Linux的了解还处于比较低级的层次，他们可能会几条命令、会配几种服务、会用rpm来安装软件、会操作KDE/Gnome界机等等，但是当他们遇到一些需要编译安装的软件时，面对一些简单的出错信息，他们就手足无措了。要想真正跨跃这些初级层次，你就不可能不去了解一些底层的东西，比如本文要讲到的Linux下的C开发环境以及本文之外的其它操作系统知识。
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2013-06-15 08:19:11
很好的C语言教程
C语言教程第一章: C语言概论
Ｃ语言的发展过程
Ｃ语言是在 70 年代初问世的。一九七八年由美国电话电报公司(AT&T)贝尔实验室正式
发表了Ｃ语言。同时由 B.W.Kernighan 和D.M.Ritchit 合著了著名的“THE C PROGRAMMING
LANGUAGE”一书。通常简称为《K&R》，也有人称之为《K&R》标准。但是，在《K&R》中并
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