⚙️ C/C++ Formatter

Updated: 2026-07-12
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How to Use the C/C++ Formatter

Using the C/C++ Formatter is simple:

  1. Paste Code
    Paste your C/C++ code into the input area. All processing runs locally in your browser.
  2. Adjust Settings
    Choose indentation size, brace style, and other options.
  3. Copy or Download
    Click format, then copy or download the result. Completely free.

Formatting Options

Indent:
Braces:
Original: 0 lines
Formatted: 0 lines
✓ Copied

About C/C++ Formatting

This tool helps you auto-beautify C/C++ code:

Auto Indentation — Detect code block nesting levels
Brace Style — K&R (same-line {) or Allman (next-line {)
Operator Spacing — Add proper spaces around operators
Blank Line Cleanup — Remove consecutive blank lines
Preprocessor directives — Keep #include/#define at line start
Note: This tool provides basic formatting without complex AST analysis. All processing is done locally in your browser.

Frequently Asked Questions (FAQ)

Will formatting change my code's logic?

No. Formatting only adjusts whitespace and layout. The code remains functionally identical.

What's the difference between K&R and Allman brace styles?

K&R places the opening brace on the same line (if (x) {), while Allman places it on a new line. Both are valid; it's a matter of preference.

Which syntax features are supported?

Supports basic C/C++ syntax structures including functions, classes, and control flow. For complex nesting, consider using an IDE formatter.