Operation Embedded | Practice Problem Studio

Authoring Workspace

New practice problem

NewNot saved

Publication gateThe reference solution is compiled against every public and hidden test before a published version can be saved. Starter and solution fixtures must have identical hidden harnesses.

Problem id Catalog number

Title Track

Difficulty

CPU seconds Memory KB

Catalog summary

Learner Brief

Description and examples

Public

Statement paragraphs (blank line separates paragraphs) Constraints (one per line) Examples (JSON array) Cortex-M context notes (one per line) Execution model (JSON, optional)Use kind: cortex-m-simulator for problems backed by modeled peripherals and an ordered hidden fixture. Default program input

Guided Help

Progressive hints and editorial

Public after unlock

Three hints (one per line) Explanation paragraphs (blank line separates paragraphs) Full editorial (Markdown) Reference solution snippet shown in editorialMust exactly appear before main() in the full reference source.

Private Judge Internals

Full source and validation fixture

Admin only

These fields intentionally expose standard-I/O adapters and main(). Learners only receive the firmware-facing prefix; the server appends the hidden fixture during Run and Submit.

Full starter source + hidden fixtureMust contain a canonical int main(void) and matching YOUR CODE markers. Full reference solution + hidden fixtureThe fixture from main() Judge tests (JSON array, including hidden tests)

Author the complete embedded C learning experience.

New practice problem

Description and examples

Progressive hints and editorial

Full source and validation fixture

Admin access