Chapter 2

Core C#

WHAT’S IN THIS CHAPTER?

  • Declaring variables
  • Initialization and scope of variables
  • Predefined C# data types
  • Dictating execution flow within a C# program using conditional statements, loops, and jump statements
  • Enumerations
  • Namespaces
  • The Main() method
  • Basic command-line C# compiler options
  • Using System.Console to perform console I/O
  • Using internal comments and documentation features
  • Preprocessor directives
  • Guidelines and conventions for good programming in C#

WROX.COM CODE DOWNLOADS FOR THIS CHAPTER

The wrox.com code downloads for this chapter are found at http://www.wrox.com/remtitle.cgi?isbn=1118314425 on the Download Code tab. The code for this chapter is divided into the following major examples:

  • ArgsExample.cs
  • DoubleMain.cs
  • ElseIf.cs
  • First.cs
  • MathClient.cs
  • MathLibrary.cs
  • NestedFor.cs
  • Scope.cs
  • ScopeBad.cs
  • ScopeTest2.cs
  • StringExample.cs
  • Var.cs

FUNDAMENTAL C#

Now that you understand more about what C# can do, you will want to learn how to use it. This chapter gives you a good start in that direction by providing a basic understanding of the fundamentals of C# programming, which is built on in subsequent chapters. By the end of this chapter, you will know enough C# to write simple programs (though without using inheritance or other object-oriented features, which are covered in later chapters).

YOUR FIRST C# PROGRAM

Let’s start by compiling and running the simplest possible C# program — a simple console app consisting of a class that writes a message to the ...

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