#158 · Programming Language Tools Developer Tool

C++ Validator

Validate C++ source structure before running a compiler. The validator checks delimiters, preprocessor pairs, include syntax, class semicolons, constructor and destructor patterns, main signatures, strings, and likely missing semicolons.

Developer Input

Local browser processing

C++ Source Code

#include <iostream>
#include <memory>
#include <vector>

class Worker {
public:
    virtual ~Worker() = default;
    void run(const std::vector<int>& values) {
        for (const auto& value : values) {
            std::cout << value << '\n';
        }
    }
};

int main() {
    auto worker = std::make_unique<Worker>();
    worker->run({1, 2, 3});
    return 0;
}

Validation Level

Maximum issues

items

Normalize outer whitespace Remove repeated empty lines Include strict checks Auto-run while typing

How to use this developer tool

Paste source code into the input area.
Select the processing mode and adjust the numeric option.
Run the tool or keep auto-run enabled.
Review status, summary, interpretation, and the copy-ready output.
Copy the result or download it with the appropriate extension.

What this developer tool does

Input → protected lexical scan → tool-specific parsing or transformation → metrics → status and recommendations

Results are browser-side heuristics. They do not replace Roslyn, Clang, a compiler, unit tests, or project-specific static analysis.

Example

Input: Paste the included sample and run the tool.
Output: The page produces a real C++ Validator result, statistics, status, and practical interpretation.

Tips for better output

Use complete, consistently encoded source whenever possible.
Run compiler and project tests after automated formatting or conversion.
Macro-heavy, generated, or incomplete code may produce partial structural analysis.
Keep auto-run disabled when editing extremely large source files.

FAQ

How do I validate C++ syntax online?

Paste source into the input area, select the available options, and run C++ Validator. The result is processed locally in your browser.

How do I find missing C++ semicolons?

The tool reports browser-detectable structure and style signals with line-oriented output where applicable.

How do I check preprocessor if and endif pairs?

The analysis is heuristic and intentionally avoids claiming compiler-level certainty.

Why can structurally valid C++ still fail to compile?

Large or macro-heavy files may produce partial results; use a compiler or language-specific analyzer for final verification.

How do I locate validation errors by line?

Run the formatter or validator first, then review the generated recommendations and copy or download the output.

Related developer tools

TypeScript Checker TypeScript Generator TypeScript Formatter TypeScript Converter

Supported analysis scope

Capability	Browser-side behavior
Privacy	Source is processed locally
Large input	Designed for 10,000+ lines
Verification	Compiler confirmation recommended

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