<!DOCTYPE qhelp PUBLIC

"-//Semmle//qhelp//EN"

"qhelp.dtd">

<qhelp>

<overview>

<p>

This query finds variables that are assigned a value but are never read. This is usually an indication of a variable that has been orphaned

due to changes in code, or a defect in the code due to the omission of the unused variable. The unused variables should be

removed to avoid misuse.

</p>

</overview>

<recommendation>

<p>

Examine the code to see if the variable is no longer needed. If it is unnecessary, remove the variable.

Otherwise, update the relevant code to use the variable.

</p>

</recommendation>

<example>

<sample src="Unused.cpp" />

</example>

<references>

<li>SEI CERT C Coding Standard: <a href="https://wiki.sei.cmu.edu/confluence/display/c/MSC13-C.+Detect+and+remove+unused+values">MSC13-C. Detect and remove unused values</a>.</li>

</references>

</qhelp>