title: How to convert negative number to positive in c#?
body: <p>Where taking away a minus value i.e. <code>5 - (-5)</code>, we are working this out as 10, which yes, mathematically it is correct.</p>
  
  <p>But in this case, our logic should treat each number as a positive and not minus negative numbers. It should be <code>5 - (-5) = 0</code> as per our requirement.</p>