<?xml version="1.0"?>
<!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd">
<article xmlns="http://docbook.org/ns/docbook">
  <literallayout>if (x != NULL) {
  for (i = 0; i &lt; size; i++) {
    if (x[i] &gt; 0) {
      x[i]--;
  }}}</literallayout>
</article>
