title: How to store a decimal value up to 2 decimal places in another variable in C?
body: <p>Suppose <code>a</code> = <code>3.91900007534</code>.<br />
  In C language, I want to store the value of the variable <code>a</code> in another variable, <code>r</code>, up to two decimal places, such that <code>r</code> = <code>3.92</code>.<br />
  Note that I don't want to <em>print</em> the value up to two decimal places, I just want to <em>store</em> the value as I need the exact value of <code>r</code> for the next operation.</p>