Cheat Sheet

double Student::computeMajorGpa() {
  double cumulativeGPA = 0;
  int numCourses = 0;
  int i;

  for (i = 0; i <coursesTaken.size(); i++) {
    if (coursesTaken[i].name == "CS" || coursesTaken[i].name == "MATH") {
      numCourses++;
      switch(coursesTaken[i].grade) {
         case 'A': cumulativeGPA += 4.0; break;
         case 'B': cumulativeGPA += 3.0; break;
         case 'C': cumulativeGPA += 2.0; break;
         case 'D': cumulativeGPA += 1.0; break;
         default: cumulativeGPA += 0.0;  // F
      }
    }
  }
  if (numCourses == 0)
   return -1;
  else
     return cumulativeGPA / numCourses;
}