title: What happens when I call a function without assigning its returned value to a variable?
body: <p>Say I have the following function:</p>
  
  <pre><code>int foo()
  {
      return 1234;
  }
  </code></pre>
  
  <p>What is the effect of calling this function without assigning its returned value to any variable:</p>
  
  <pre><code>foo();
  </code></pre>
  
  <p>Also what is the effect of using an operator without assigning its returned value to any variable:</p>
  
  <pre><code>1 + 2 + 3;
  </code></pre>