title: C char array concatenation
body: <p>What I have:</p>
  
  <pre><code>char cmd[50] = "some text here";
  char v[] = {'a','s','d','c','b'};
  </code></pre>
  
  <p>So I want to concatenate <code>cmd</code> by adding a letter from <code>v</code>.</p>
  
  <p>Obviously: </p>
  
  <pre><code>strcat(cmd, v[3]);
  </code></pre>
  
  <p>doesn't work because <code>strcat</code> doesn't accept the <code>v[n]</code> parameter <code>n = int</code>.</p>