Pass multiple optional parameters to a C function

Question

Is there a way to set up a C  function to accept any number of parameters  For example  could you set up a function such that the following all work -   x   AddUp 2  3   x   AddUp 5  7  8  2   x   AddUp 43  545  23  656  23  64  234  44

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1 You can make overload functions      SomeF strin s       SomeF string s  string s2        SomeF string s1  string s2  string s3         More info  http   csharpindepth com Articles General Overloading aspx  2 or you may create one function with params  SomeF  params string   paramArray    SomeF  aa   bb    cc    dd    ff       pass as many as you like   More info  https   docs microsoft com en-us dotnet csharp language-reference keywords params  3 or you can use simple array  Main string   args

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Use a parameter array with the params modifier   public static int AddUp params int   values        int sum   0      foreach  int value in values                sum    value            return sum      If you want to make sure there s at least one value  rather than a possibly empty array  then specify that separately   public static int AddUp int firstValue  params int   values     Set sum to firstValue to start with in the implementation    Note that you should also check the array reference for nullity in the normal way  Within the method  the parameter is a perfectly ordinary array  The parameter array modifier only makes a difference when you call the method  Basically the compiler turns   int x   AddUp 4  5  6     into something like   int   tmp   new int     4  5  6    int x   AddUp tmp     You can call it with a perfectly normal array though - so the latter syntax is valid in source code as well

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C  4 0 also supports optional parameters  which could be useful in some other situations  See this article

[c#] Pass multiple optional parameters to a C# function

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