Three simple steps
How to use this tool?
This free online converter translates C++ source code into C in three simple steps.
- Step 1
Add your C++ code
Type, paste, or upload the C++ code you want to translate.
- Step 2
Convert the code
Click Convert to translate the source code into C.
- Step 3
Review the result
Review, copy, or download the resulting C code from the output editor.
See it in action
Examples of C++ to C conversion
These examples show C++ source code and the corresponding C translation. Generated results can vary as AI models are updated.
Example 1
Is String Palindrome
Program that checks if a string is a palindrome or not.
C++ code
C code
Example 2
Even or Odd
A well commented function to check if a number if odd or even.
C++ code
C code
Language comparison
Key differences between C++ and C
| Characteristic | C++ | C |
|---|---|---|
| Syntax | C++ has a more complex syntax than C, with features such as classes, templates, and operator overloading. | C has a simpler syntax than C++, with a focus on procedural programming. |
| Paradigm | C++ supports both procedural and object-oriented programming paradigms. | C supports only procedural programming paradigm. |
| Typing | C++ supports both static and dynamic typing. | C supports only static typing. |
| Performance | C++ is generally faster than C due to its support for inline functions and templates. | C is generally slower than C++ due to its lack of support for inline functions and templates. |
| Libraries and frameworks | C++ has a larger number of libraries and frameworks available, including the Standard Template Library (STL) and Boost. | C has a smaller number of libraries and frameworks available compared to C++. |
| Community and support | C++ has a large and active community with many resources available for learning and support. | C also has a large community, but it is not as active as the C++ community. |
| Learning curve | C++ has a steeper learning curve than C due to its more complex syntax and support for object-oriented programming. | C has a relatively easy learning curve compared to C++ due to its simpler syntax and focus on procedural programming. |
Common questions
Frequently Asked Questions
How do I convert C++ to C?
Paste your C++ code into the input box, confirm the languages are set to C++ and C, and click Convert. CodeConvert AI analyzes your C++ code and generates equivalent C code in seconds, preserving the original logic and structure.
What are the main differences between C++ and C?
C++ and C differ in syntax, type system, standard libraries, and common idioms, so copying code line for line usually will not compile. The converter maps each C++ construct to its closest C equivalent. See the comparison table below for the key differences between C++ and C.
Is the converted C code accurate?
The AI produces high-quality C code that preserves the behavior of your original C++ code and follows C conventions. It handles common patterns, data structures, and idioms for both C++ and C. For large or performance-critical code, review and test the C output before using it in production.
Can I convert an entire C++ project to C?
You can convert C++ files one at a time by pasting each file's code. For a full migration, convert each file and then review how classes, dependencies, and project structure map from C++ to C. Signing in for free raises the input limit to 25,000 characters per conversion for larger files.
Can I convert C back to C++?
Yes. CodeConvert AI converts in both directions, so you can convert C to C++ just as easily using our C to C++ converter. Try the C to C++ Converter
Is the C++ to C converter free, and do I need to install anything?
Yes, it is free and runs in your browser with nothing to install and no IDE extension required. You can convert C++ to C without an account for up to 2 conversions per day. Sign in for free for higher limits.
What are the benefits of signing in?
Signing in unlocks CodeConvert AI's Pro converter with more powerful AI models, a built-in chat assistant, code execution, saved conversion history, and personal notes. Every free account includes 5 credits and supports up to 25,000 characters of input per conversion, with no credit card required.
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