Edit the xcode c++ template- duplicate C++ Class.xctemplate in Applications/Xcode.app/Contents/Developer/Library/Xcode/Templates/File Templates/ C and C++/

___FILEBASENAME___.cpp

#include "___FILEBASENAME___.h"


___FILEBASENAME___::___FILEBASENAME___() {

}

___FILEBASENAME___::~___FILEBASENAME___() {
}

___FILEBASENAME___.h

#pragma once

#include "ofMain.h"

/*
 ___FILEBASENAME___.
 - description
 */

class ___FILEBASENAME___ {
public:

    ___FILEBASENAME___();
    ~___FILEBASENAME___();

};

TemplateInfo.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>AllowedTypes</key>
	<array>
		<string>public.c-plus-plus-source</string>
	</array>
	<key>DefaultCompletionName</key>
	<string>File</string>
	<key>Description</key>
	<string>A C++ class implementation with header.</string>
	<key>Kind</key>
	<string>Xcode.IDEKit.TextSubstitutionFileTemplateKind</string>
	<key>MainTemplateFile</key>
	<string>___FILEBASENAME___.cpp</string>
	<key>SortOrder</key>
	<string>2</string>
	<key>Summary</key>
	<string>A C++ class implementation with header.</string>
</dict>
</plist>