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<title>The DO keyword.</title>
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<script language="JavaScript">
</script>
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<center><h1>The DO keyword.</h1></center>
<hr>
The <b>do</b> keyword performs a simular function to
<a href="while.html">while</a>. Basicaly, it repeats a block of statements.
Here is an example of the syntax:
<pre>
main()
{
int i=5;
do
{
printf(" i is %d\n", i);
}
while(--i);
}
</pre>
The program result will look like this:
<pre>
i is 5
i is 4
i is 3
i is 2
i is 1
</pre>
The main difference between <b>do</b> and <a href=while.html>while</a> is
the time that expression is evaluated.
<ul>
<li><b>do</b> performs the first test AFTER the first iteration.
<li><b>while</b> performs the first test BEFORE the first iteration.
</ul>
<hr>
<h2>Examples:</h2>
<a href=../EXAMPLES/do.c><img src="../../GRAPHICS/computer.gif" align=left></a>
Basic <b>do</b>.
<br clear=left>
<hr>
<h2>See also:</h2>
<ul>
<li><a href="while.html">while</a> keyword.
<li><a href="for.html">for</a> keyword.
<li><a href="break.html">break</a> keyword.
<li><a href="continue.html">continue</a> keyword.
</ul>
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<address>Martin Leslie
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