bool GPA::importGrades(string fileName)
{
if (!checkGradeFile(fileName))
{
//cout << "One file bad: " << fileName << endl;
return false;
}
ifstream gradesIn;
gradesIn.open(fileName.c_str());
string id;
while(getline(gradesIn, id))
{
unsigned long long int idin;
stringstream ss;
ss << id;
ss >> idin;
string className;
string letterGrade;
getline(gradesIn, className);
getline(gradesIn, letterGrade);
double GPA = findGPA(letterGrade);
if (mapFindStudent(idin) != NULL)
{
StudentInterface* mapStudent = new Student();
delete mapStudent;
mapStudent = mapFindStudent(idin);
mapStudent->addGPA(GPA);
}
else if (setFindStudent(idin) != NULL)
{
//cout << "HERE: " << GPA << endl;
StudentInterface* setStudent = new Student();
delete setStudent;
setStudent = setFindStudent(idin);
setStudent->addGPA(GPA);
}
}
gradesIn.close();
return true;
}
/*
* importGrades()
*
* Read in and parse through the given file. Each part of an entry in the file
* is given on a separate line in the file. Student ID is first, course is
* second, and grade is last. There are no blank lines between entries. The
* following is an example file:
*
* 5291738860
* CHEM134
* A
* 9251734870
* BOT180
* B
* 9251733870
* PE273
* D+
* 5291738760
* HIS431
* A-
*
* Compute the GPA by finding the average of all the grades with a matching student ID
* in the Grade file. The GPA is calculated by taking a Student's total sum GPA and
* dividing by the number of classes taken. If the given student ID has no matching
* grades in the Grade file, the GPA is 0.00. It is not necessary to store the course
* names so long as the total number of courses taken is counted.
*
* You may assume that the given student ID exists in the map or set.
*
* Use the following point values for each grade.
*
* A = 4.0 A- = 3.7
* B+ = 3.4 B = 3.0 B- = 2.7
* C+ = 2.4 C = 2.0 C- = 1.7
* D+ = 1.4 D = 1.0 D- = 0.7
* E = 0.0
*
* Returns false if an invalid filename is given, otherwise true.
*/
bool GPA::importGrades(string fileName)
{
string student_id;
string course_name;
string grade;
StudentInterface* student = NULL;
ifstream file;
file.open(fileName);
if (!isValidClass(fileName))
{
file.close();
return false;
}
typedef set<StudentInterface*, Comparator>::iterator it;
while (getline(file, student_id))
{
unsigned long long int ID = atoi(student_id.c_str());
getline(file, course_name);
getline(file, grade);
// grabbed each line, now need to check if the student_id is equal to any in the set and map
// if it is, add that to the gpa and add to num classes
// either in set or map
if (myMap[ID] == NULL) // not in map, it is in set
{
myMap.erase(ID);
it itr;
for (itr = mySet.begin(); itr != mySet.end(); itr++)
{
if ((*itr)->getID() == ID)
{
student = *itr;
}
}
}
else
{
student = myMap[ID];
}
if (grade == "A")
{
student->addGPA(4.0);
}
else if (grade == "A-")
{
student->addGPA(3.7);
}
else if (grade == "B+")
{
student->addGPA(3.4);
}
else if (grade == "B")
{
student->addGPA(3.0);
}
else if (grade == "B-")
{
student->addGPA(2.7);
}
else if (grade == "C+")
{
student->addGPA(2.4);
}
else if (grade == "C")
{
student->addGPA(2.0);
}
else if (grade == "C-")
{
student->addGPA(1.7);
}
else if (grade == "D+")
{
student->addGPA(1.4);
}
else if (grade == "D")
{
student->addGPA(1.0);
}
else if (grade == "D-")
{
student->addGPA(0.7);
}
else if (grade == "E")
{
student->addGPA(0.0);
}
}
file.close();
return true;
}