代写C代码 代做C程序 C辅导 C家教

  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。

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。

  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