title: Check if every character in a string is available in an array c++
body: <p>I have tried for several hours, but I cannot find a good way in doing so, here is what I want to do.</p>
  
  <pre><code>string word = "hello";
  string word2 = "hey";
  string letters[4] = {"h", "e", "l", "o"};
  </code></pre>
  
  <p>I want it to either return a boolean of true or false if every character in the string "word" is contained in the array "letters" (in this case true) and the string "word2" as false. Any ideas or suggestions? I am new to c++.</p>