cial>.</span><span class=identifier>hpp</span><span class=special>&gt;</span>

<span class=keyword>struct</span> <span class=identifier>phonebook_entry</span>
<span class=special>{</span>
  <span class=identifier>std</span><span class=special>::</span><span class=identifier>string</span> <span class=identifier>family_name</span><span class=special>;</span>
  <span class=identifier>std</span><span class=special>::</span><span class=identifier>string</span> <span class=identifier>given_name</span><span class=