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 syntax similar to Java and C++, with curly braces and semicolons to denote code blocks and statements. It also supports LINQ, which allows for querying data from various sources. | C has a syntax that is more low-level than C#, with a focus on pointers and memory management. It does not have built-in support for object-oriented programming or LINQ. |
| Paradigm | C# is a multi-paradigm language that supports object-oriented, imperative, and functional programming styles. | C is a procedural language that focuses on imperative programming. |
| Typing | C# is a strongly-typed language, meaning that variables must be declared with a specific data type and cannot be changed later. | C is a weakly-typed language, meaning that variables can be declared without a specific data type and can be changed later. |
| Performance | C# is generally slower than C due to its managed code environment and garbage collection. | C is generally faster than C# due to its low-level nature and lack of managed code environment. |
| Libraries and frameworks | C# has a large number of libraries and frameworks available, including .NET, ASP.NET, and Xamarin. | C has a smaller number of libraries and frameworks available, but it does have some popular ones such as the standard C library and OpenGL. |
| Community and support | C# has a large and active community, with many resources available for learning and troubleshooting. | C also has a large community, but it may be more difficult to find resources for specific issues due to its lower-level nature. |
| Learning curve | C# has a moderate learning curve, with a syntax that is similar to other popular languages and many resources available for learning. | C has a steep learning curve, with a syntax that is more low-level and a focus on memory management and pointers. |
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 5 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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