[#BloombergLP-balcl-CommandLine-printUsage-02]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/balcl.adoc[balcl]::xref:BloombergLP/balcl/CommandLine.adoc[CommandLine]::printUsage
:relfileprefix: ../../../
:mrdocs:

Print usage to the specified `errorStream`, using the specified `programName` as the name of the program in the printed usage.

== Synopsis

Declared in `<balcl_commandline.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
printUsage(
    std::ostream& errorStream,
    std::string_view const& programName) const;
----


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