tailieunhanh - Statement Won't Compile

Understanding Statements A statement is a command that performs an action. Statements are found inside methods. You'll learn more about methods in Chapter 3, “Writing Methods and Applying Scope,” but for now, think of a method as a named sequence of statements inside a class. Main, which was introduced in the previous chapter, is an example of a method. Statements in C# must follow a well-defined set of rules. These rules are collectively known as syntax. (In contrast, the specification of what statements do is collectively known as semantics.) One of the simplest and most important C# syntax rules states. | Understanding Statements A statement is a command that performs an action. Statements are found inside methods. You ll learn more about methods in Chapter 3 Writing Methods and Applying Scope but for now think of a method as a named sequence of statements inside a class. Main which was introduced in the previous chapter is an example of a method. Statements in C must follow a well-defined set of rules. These rules are collectively known as syntax. In contrast the specification of what statements do is collectively known as semantics. One of the simplest and most important C syntax rules states that you must terminate all statements with a semicolon. For example without its terminating semicolon the following statement won t compile Hello World TIP C is a free format language which means that white space such as a space character or a new line is not significant except as a separator. In other words you are free to lay out your statements in any style you choose. A simple consistent layout style makes a program easier to read and understand. The trick to programming well in any language is learning its syntax and semantics and then using the language in a natural and idiomatic way. This approach makes your programs readable and easy to modify. In the chapters throughout this book you ll see examples of the most important C statements. Understanding the Internet as an Infrastructure You have heard all the hype about the Internet and so none of it will be repeated here. However you should consider a few points. The Internet is a big network alright a really big network and as a result the information and data that you can access over it can be quite remote. This should have an impact on the way you design your applications. For example you might get away with locking data in a database while a user browses it in a small local desktop application but this strategy will not be feasible for an application accessed over the Internet. Resource use impacts

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• Statement Wont Compile
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