C / C++ Code Humanizer — Clean Up AI C / C++ Code to Match Your Style (Free)
AI-generated C / C++ works, but it rarely matches the codebase it lands in. Here is how to clean it up so it reads like the rest of your project — and a free tool that does it in seconds.
What gives AI-generated C / C++ away
Comments that restate the code — # Loop through each item above a for loop adds nothing a reader can't see
"Step 1:", "Step 2:" scaffolding — useful while the model was reasoning, noise once the code is in your repo
Naming that ignores your project — camelCase locals in a snake_case Python codebase, or the other way round in JavaScript
Needless temporaries — result = a + b followed immediately by return result
Docstrings that repeat the function name — """Calculate the total.""" on calculate_total()
Before and after
This is a typical AI draft and the real output of Code Humanizer's Idiomatic preset at 100%. Same logic, less noise.
AI draft
#include <stdio.h>
// Function to find the maximum value in an array
int find_max(const int *values, size_t item_count) {
// Step 1: Initialize max with the first element
int maxValue = values[0];
// Step 2: Loop through the rest of the array
for (size_t i = 1; i < item_count; i++) {
if (values[i] > maxValue) {
maxValue = values[i]; // update the max value
}
}
return maxValue;
}
After Code Humanizer (Idiomatic, 100%)
#include <stdio.h>
// Function to find the maximum value in an array
int find_max(const int *values, size_t item_count) {
// Initialize max with the first element
int max_value = values[0];
// Loop through the rest of the array
for (size_t i = 1; i < item_count; i++) {
if (values[i] > max_value) {
max_value = values[i];
}
}
return max_value;
}
The convention it applies for C / C++: whatever style the rest of your file already uses — Code Humanizer follows the snippet's majority convention.
C and C++ clean-ups
Match the naming style of the surrounding file — mixed conventions are the biggest tell in C code
Remove comments that restate a single line, but keep comments on ownership, lifetimes and pointer rules
Preprocessor directives, pointers and structs are left untouched
Run clang-format afterwards if your project uses it
Try the free C / C++ code humanizer
Paste your C / C++ code, pick a style preset and copy the result. 3 free tries, no account needed.
No. Code Humanizer only changes comments, whitespace, local variable names and redundant temporaries. Renames are applied consistently and skip strings, attribute access, keyword arguments and object keys. As with any change, run your tests.
A note on coursework
Code Humanizer is a readability and style tool. It isn't designed to hide who wrote code, and using it to break a course's academic integrity rules is against our Terms of Service. If your course allows AI assistance, comparing an AI draft with a cleaned-up version is a good way to learn idiomatic style.