title: Whether to use Integer/Float/Double for Calculation of price & discount
body: <p>I am a beginner in android. I am developing a <strong>Sales related app</strong> in which I need to do lots of calculations.
  <strong>I am confused which Variables to use for processing Prices, Discounts etc.</strong></p>
  
  <p>Currently I am storing Price as INTEGER.
  E.g. <strong>180 Rs ---> 18000 Paise</strong> &amp; while Showing I simple divide it by 100.</p>
  
  <p>But <strong>I want to show price/discounts upto 2 decimal places like 150.50 Rs or 20.50Rs.</strong>
  What should I use? <strong>A float Or A Double or Anything else?</strong>
  Please help me out... Thanks...</p>