title: How to delete substring in C
body: <p>How can I delete a string inside another string in <strong>C</strong>?</p>
  
  <pre><code> const char *   Cmd = start;more;muchmore;123 45;rest
  </code></pre>
  
  <p>Now I want to remove the <code>"123 45;"</code> from <code>Cmd</code>.</p>
  
  <p>The <code>"123"</code> can be used to identify the start and semicolon after <code>45</code> as end.</p>
  
  <p>So after this operation the <code>Cmd</code> should be <code>start;more;muchmore;rest</code></p>