PromptVaultCan you predict where this recursive call returns?
For new programmers practicing call-stack reasoning on code they already have.
Works with
- Codex
- GitHub Copilot
- Ollama
The prompt55 words · 1 blank
What you fill in
- Recursive code
[recursive_code]ExampleRecursive tree search or factorial function with a sample call
How to use it
- 1Open it in PromptVault. Find it in Coding, or search for “Can you predict where this recursive call returns?”.
- 2Fill in the blank. recursive code — the only things the prompt cannot know.
- 3Copy and paste it into GitHub Copilot. It also works with Codex and Ollama.
About this prompt
“Can you predict where this recursive call returns?” is a beginner coding prompt. For new programmers practicing call-stack reasoning on code they already have. It is 55 words long and written to get a usable answer on the first message, in Codex, GitHub Copilot and Ollama or any other chat assistant. Good for: beginner friendly, explainer, step by step and testing. Like every prompt in PromptVault, it was written and edited in-house, and it works offline once the app is installed.
More coding prompts
All 120 in Coding
Can you trace a condition before running it?For newer developers building confidence with Boolean logic through prediction drills.- Off-by-one errors become visible before executionFor new programmers practicing boundary reasoning in a familiar language.
- Build the right mental model for a code snippetFor beginners learning why code behaves as it does rather than memorizing syntax.
- Follow one value from input to side effectFor newer developers learning to trace real code without guessing from names.
- Know when a loop can stop earlyFor beginners learning early exits through predictions rather than definitions alone.
- Learn to place mocks at real system boundariesFor developers learning why mocking the wrong call makes tests brittle or misleading.