4. Solution Strategy

4.1 Approach

The system is structured as a linear pipeline of three components, each with a single responsibility:

stdin → Input Parser → Field Processor → Output Formatter → stdout

Each stage operates on a well-defined data structure, making the pipeline easy to test and reason about independently.

4.2 Key Decisions

Decision	Choice	Rationale
Structure	Three-component pipeline	Matches the chosen decomposition; separates concerns cleanly.
Data representation	vector<string> per field	Simple, sufficient for in-memory grid manipulation in C++.
Processing	Synchronous, sequential	Single-threaded console app; no concurrency needed.
I/O	stdin / stdout	Kata convention; no file or network I/O required.

4.3 Component Responsibilities

• Input Parser: reads raw lines from stdin, groups them into fields (header + grid rows), stops on 0 0.

• Field Processor: for each field, iterates every cell and counts adjacent mines using 8-directional neighbour checks.

• Output Formatter: prints each annotated field with the Field #N: header and blank-line separator.