C / C++ / MFC

q_p wrote:

I'm new to C++

q_p wrote:

Any help would be awesome.

q_p wrote:

if/else, switch, functions, and arrays

#include <vector>
#include <algorothm>
#include <iterator>
#include <fstream>

class Student
{
	Student() : _StudentID(0) {}
	~Student() {}

	void setStudentID(long id) {_StudentID = id; }
	long getStudentID() const { return _StudentID; }

	std::vector<long>::iterator grades_begin() { return _Grades.begin(); }
	std::vector<long>::iterator grades_end() { return _Grades.end(); }

	void addGrade(long grade) {_Grades.push_back(grade); }
	void addGrades(const std::vector<long>& grades) { _Grades.insert(back_inserter(_Grades), grades.begin(), grades.end()); }
	unsigned long grade_count() const { return _Grades.size(); }
private:
	long _StudentID;
	std::vector<long> _Grades;
};

ostream& operator<<(ostream& os, const Student& s)
{
	os << s.getStudentID() << " ";
	copy(s.begin(), s.end(), ostream_iterator<long>(os, " "));
	os << endl;
	return os;
}

istream& operator>>(istream& is, Student& s)
{
	long id;
	std::vector<long> grades;
	is >> id;
	copy(istream_iterator<long>(is), istream_iterator<long>(), back_inserter(grades));
	s.setStudentID(id);
	s.addGrades(grades);
	return is;
}

int main()
{
	ifstream fin;
	fin.open("mydata.txt");
	std::vector<Student> students;
	copy(istream_iterator<Student>(fin), istream_iterator<Student>(), back_inserter(students));
	fin.close();
}

typedef std::vector<long> collection_t;
typedef collection_t::value_type value_type;
typedef collection_t::iterator iterator;
typedef collection_t::const_iterator const_iterator;

Student &s = ....
Student::iterator i = s.begin();
Student::iterator e = s.end();

ThatsAlok wrote:

his Lecturer might be Seeing this tooo

Zac Howland wrote:

_Grades.insert(back_inserter(_Grades), grades.begin(), grades.end());

copy(grades.begin(), grades.end(), back_inserter(_Grades));

Zac Howland wrote:

What STL implementation are you using by chance?

q_p wrote:

where the first number of each line will be a student ID number and the next five numbers are grades they got on 5 different tests.

Oliver123 wrote:

So, any ideas on how to fix this without restarting?

Oliver123 wrote:

When my program blows up