Learn GPC

Variables, conditions, functions, arrays, combos, input layers, and output order — the full toolkit.

Learn the complete source language a piece at a time, from declarations and operators to functions, remaps, and combos.

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Work through these pages in order the first time. Return directly to any page later as a reference.

• Source layout and global namespace

• Statements, blocks, and comments

• Runtime variables

• Definitions

• Enumerations

• Immutable const data

• Raw data section

• sizeof and addr

• Boolean truth

• Operators

• Flow control

• User-created functions

• init and main

• Remap and unmap

• Combos and fcombo

• Compile-time versus runtime checklist