title: Multiple optional parameters calling function
body: <p>Assume that i have a function like this below
  It takes 3 parameters and 2 have optional values</p>
  
  <pre><code>private void  myfunc (int a, int b=2, int c=3)
  {
    //do some stuff here related to a,b,c
  }
  </code></pre>
  
  <p>now i want to call this function like below how possible ?</p>
  
  <pre><code>myfunc(3,,5)
  </code></pre>
  
  <p>So i want it to use default parameter b=2 </p>
  
  <p>But it is giving error that way.</p>
  
  <p>Here the error message</p>
  
  <pre><code>Argument missing
  </code></pre>
  
  <p>C# 4.5</p>