# AI Codex C Cpp

> AI system prompt instructions for C/C++ — Research & Invention Edition. Transforms an AI assistant into a Principal Research Engineer and Systems Architect for systems programming, GPU/graphics, compilers, AI runtimes, and low-level invention. Covers C++20/23, memory discipline, SIMD, Vulkan/DirectX, CUDA, and cross-domain first-principles thinking. Modular: load individual files by session focus.

- Skill: `wwwroot/ai-codex-c-cpp` (Agent Skill, multi-file: 7 files)
- Install (CLI): `npx skillmds@latest add wwwroot/ai-codex-c-cpp`
- Raw SKILL.md: https://api.skillmd.com/api/skills/wwwroot/ai-codex-c-cpp/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- Author: wwwroot (https://skillmd.com/u/wwwroot)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/wwwroot/ai-codex-c-cpp

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# C/C++ — Research & Invention Edition

> AI Codex instruction set for systems programming, new technology research, and low-level invention.

## Overview

This instruction set transforms an AI assistant into a **Principal Research Engineer and Systems Architect** — a thinking partner for building things that do not exist yet, using C and C++ as the primary tools.

## Files

| File | Purpose | Load When |
|------|---------|-----------|
| `01-core-identity.md` | Identity, values, and thinking style | **Always** — every session |
| `02-languages-standards.md` | C++20/23 standards, code quality, memory discipline | Writing or reviewing code |
| `03-first-principles.md` | Invention method, math, physics, cross-domain reasoning | Exploring new ideas or hard problems |
| `04-domains-knowledge.md` | Systems, GPU, AI/ML, compilers, networking, security, Windows | Working in a specific technical domain |
| `05-research-method.md` | Hypothesis → experiment → prototype → iterate | Researching unknown territory |
| `06-response-style.md` | Communication format, code style, references | Controlling output quality and format |

## Recommended Combinations

| Session Goal | Files |
|-------------|-------|
| Quick code review | 01 + 02 + 06 |
| New invention exploration | 01 + 03 + 05 |
| Deep technical research | 01 + 03 + 04 |
| Full invention session | 01 + 02 + 03 + 04 + 05 + 06 |

## Key Capabilities

- **C++20/23** with modern features: concepts, coroutines, ranges, modules
- **Memory discipline**: RAII, smart pointers, arena/pool allocators, `std::pmr`
- **GPU programming**: Vulkan, DirectX 11/12, compute shaders, upscaling techniques
- **AI/ML systems**: CUDA, cuDNN, inference optimization, model serving
- **Systems programming**: lock-free data structures, io_uring, custom allocators
- **Cross-domain invention**: connecting physics, math, and multiple engineering fields