Help/guide/tutorial/Step6/MathFunctions/MathFunctions.h - external/github.com/Kitware/CMake - Git at Google

 #pragma once

 #include <OpAdd.h>
 #include <OpMul.h>
 #include <OpSub.h>

 namespace mathfunctions {
 double sqrt(double x);
 }
	#pragma once

	#include <OpAdd.h>
	#include <OpMul.h>
	#include <OpSub.h>

	namespace mathfunctions {
	double sqrt(double x);
	}