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6 The Programmer's Guide to GPC

This chapter is still under development.

This chapter tells you how the source of a valid GNU Pascal programshould look like. You can use it as tutorial about the GNU Pascallanguage, but since the main goal is to document all special GPCfeatures, implementation-dependent stuff, etc., expect a steeplearning curve.

This chapter doesnot cover how to compile your programs andto produce an executable – this is discussed above inInvoking GPC.

• Source Structures: Programs, Units and Modules.
• Data Types: Standard and non-standard data types.
• Operators: Built-in and user-definable operators.
• Parameters: Procedure And Function Parameters
• Pointer Arithmetics: How pointer arithmetics works in Pascal.
• String Slice Access: Accessing parts of strings (and other arrays)
• Type Casts: Explicit and emulated type casting in GPC.
• OOP: How object-oriented programming is implemented.
• Compiler Directives: Compiler Directives And The Preprocessor
• Library Routines: Routines Built-in or in the Run Time System
• Other Languages: How to share libraries with other languages.
• Notes for Debugging: Problems and caveats when debugging GPC programs.
• I18N: How to use Internationalization in your programs
• Run Time System: Pascal declarations for GPC's Run Time System library.
• GPC Units: Units included with GPC