Csharp_Chap06

This document summarizes key aspects of C# programming, including: 1. C# programs can be split across multiple files, and the compiler does not care if code is in one or many files. File extensions matter to programmers, not compilers. 2. Characters are stored as numbers using ASCII or Unicode encoding schemes. The char data type represents characters. 3. Comments are lines of code ignored by the compiler that provide documentation for programmers. 4. Preprocessor directives like #define, #if, #else control code inclusion/exclusion before compilation. This allows conditional compilation.