title: efficient way to divide ignoring rest
body: <p>there are 2 ways i found to get a whole number from a division in c++</p>
  
  <p>question is which way is more efficient (more speedy)</p>
  
  <p>first way:</p>
  
  <pre><code>Quotient = value1 / value2;  // normal division haveing splitted number
  
  floor(Quotient);             // rounding the number down to the first integer
  </code></pre>
  
  <p>second way:</p>
  
  <pre><code>Rest = value1 % value2;             // getting the Rest with modulus % operator
  
  Quotient = (value1-Rest) / value2;  // substracting the Rest so the division will match
  </code></pre>
  
  <p>also please demonstrate how to find out which method is faster</p>