Clarifications on the discussion in Accelerated C++ header files - c++

Question

I am reading Accelerated C++ Chapter 4: Organizing Programs and Data. I came across the following piece of code, which is saved to a file called median.cpp:
// median.cpp file contents
#include <algorithm>
#include <stdexcept>
#include <vector>
using std::domain_error;
using std::sort;
using std::vector;
// Compute the median of a vector<double>
double median(vector<double> vec)
{
// Code for what the median function does goes here
}
and then, later on on page 67., the authors discuss an include guard like below, which is saved to a file called median.h.
#ifndef GUARD_median_h
#define GUARD_median_h
// median.h - final version
#include<vector>
double median(std::vector<double>);
//
#endif
Are we supposed to "include" the median.h into median.cpp before compiling, like below?
// median.cpp file contents
#include "median.h"
#include <algorithm>
#include <stdexcept>
#include <vector>
using std::domain_error;
using std::sort;
using std::vector;
// Compute the median of a vector<double>
double median(vector<double> vec)
{
// Code for what the median function does goes here
}
I am asking this because, in section 4.3 where the authors discuss this topic, they have failed to mention how someone is supposed to make use of median.cpp and median.h for compilation.