CPP/cpp_book/chap3/grade.cpp


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#include <vector>
#include "student_info.h"
#include "median.h"
#include "grade.h"

double grade(double midterm, double final, double homework)
{
	return (midterm * 0.2 +
		final * 0.4 +
		homework * 0.4);
}

/* Overloads above grade() */
double grade(double midterm, double final, const std::vector<double>& hw)
{
	if (hw.size() == 0)
		throw std::domain_error("Student has no homework");

	return grade(midterm, final, median(hw));
}

double grade(const StudentInfo& s)
{
	return grade(s.midterm, s.final, s.homework);
}