title: Code-runner configuration for running multiple cpp classes in vscode
body: <p>I have a cpp project with multiple classes and headers. I was trying to make it compile and run using tasks and lunch.json but I gave up. I realized that a while ago I had a problem with Python interperter and went to code-runner configuration to change the default interperter when working with Python. But there has to be a way to make code-runner work even in cpp when having multiple classes and header.
  This is what I found in the configuration:</p>
  
  <pre><code>"code-runner.executorMap": {
      "cpp": "cd $dir &amp;&amp; g++ -std=c++14 $fileName  -o $fileNameWithoutExt &amp;&amp; $dir$fileNameWithoutExt",
  },
  </code></pre>
  
  <p>I see that only one file gets compiled. What should I add to the code above to make vscode compile all classes?</p>