title: Multiplying through Addition
body: <p>I want to create a function that finds the product of two integers by using addition that can handle negatives and positives both.</p>
  
  <p>This is the code I have so far...
  getting crazy numbers as results ..I am a noob..Thank you</p>
  
  <pre><code>double multi(double n1, n2)
  {
  
    double answer(0), i=0;
  
    do
    {
      answer += n1; i++;
    } while (i &lt; n2);
  
    return answer;
  }
  </code></pre>