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how to compile C function inside C-Sharp program?

This is a discussion on how to compile C function inside C-Sharp program? within the C# Programming forums, part of the General Programming Boards category; Hi, I do not know how to code in C Sharp. I want to add a C function to an ...

  1. #1
    Registered User
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    how to compile C function inside C-Sharp program?

    Hi,

    I do not know how to code in C Sharp. I want to add a C function to an existing, working C Sharp program, and compile it. Let's say the C function is something like this:

    Code:
    #include "stdio.h" 
    #include "stdlib.h" 
    #include "string.h"
    
    
    
    Test_Function ( )
    
    {
    
      /* C codes go here. */
    
    }
    What do I need to do to make this C Sharp program compile with the above test C function added? I tried adding standard C libraries at the top of the C Sharp program, but it won't compile.



    Please help. Thank you.

  2. #2
    Gawking at stupidity
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    You can't. You can compile your C function into a .dll and then call the function from inside C#, although you're probably better off just learning C#. What's the function you're trying to implement?
    If you understand what you're doing, you're not learning anything.

  3. #3
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    Thanks for your response. I have only a week to get this done. Learning to write in C-Sharp at this moment is not practical.
    You mentioned about compiling into a .dll and then calling it from C#. Is this the easiest solution? If so, how do you go about doing this?

  4. #4
    Captain Crash brewbuck's Avatar
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    Just make a normal DLL, export the functions you want to call from C++, then use the [DllImport] attribute to bring the functions into scope in C#.

    See this article: .NET Column: Calling Win32 DLLs in C# with P/Invoke
    Code:
    //try
    //{
    	if (a) do { f( b); } while(1);
    	else   do { f(!b); } while(1);
    //}

  5. #5
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    If learning to write in C# is not practical, I would suggest compiling code into a DLL and interfacing to it from C# is also not particularly practical.

    Compiling into a DLL is not necessarily the easiest solution, as it requires particular techniques in C# to access the DLL function, but it is the most practical solution if you don't want to rewrite C code as C#. It does rely on some knowledge of C# though.
    iMalc likes this.
    Right 98% of the time, and don't care about the other 3%.

    If I seem grumpy or unhelpful in reply to you, or tell you you need to demonstrate more effort before you can expect help, it is likely you deserve it. Suck it up, Sunshine, and read this, this, and this before posting again.

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