title: Sum values of 2 vectors
body: <p>Is there any implemented method in the C++ library which allows you to sum the values of two vectors (of the same size and type of course)? 
  <br>For example: </p>
  
  <pre><code>std::vector&lt;int&gt; a;//looks like this: 2,0,1,5,0
  std::vector&lt;int&gt; b;//looks like this: 0,0,1,3,5
  </code></pre>
  
  <p>Now then adding their values together should look like this:</p>
  
  <pre><code>//2,0,2,8,5
  </code></pre>
  
  <p>The answer I'm expecting is either "No there isn't" or "yes" + method.</p>