#include <vector>
#include "Student_info.h"
#include "grade.h"

using std::vector;

// separate passing and failing student records: first try
vector<Student_info> extract_fails(vector<Student_info>& students)
{
	vector<Student_info> pass, fail;

#ifdef _MSC_VER
	for (std::vector<Student_info>::size_type i = 0;
#else
	for (vector<Student_info>::size_type i = 0;
#endif
	     i != students.size(); ++i)
		if (fgrade(students[i]))
			fail.push_back(students[i]);
		else
			pass.push_back(students[i]);

	students = pass;
	return fail;
}