Converting Code from C Language into C#

I have source code of C language and I need to convert it into C# .NET. It's a kind of calculator program which shows Catholic Calendar of Liturgical Celebrations. The source of origin came from below URL: [login to view URL] And also I attached the same source code. Please check it out. And you can check how to convert C language to C# .NET from below URL: [login to view URL] But above URL of converter is just for the example of conversion and it's not perfect. You should convert codes by yourself and I'll check it. The Results of Converting Should: Be based on .NET4.0. Be based on Visual Studio 2010. Be provided as a Visual Studio Project File. Be compiled as a DLL file which can be used for other C# project. (Not .exe file like original source code) Give exactly same result of calculation as the original C language source code. Have no errors. I'll just accept serious bidding. Thanks.