Suppose a course has three credits. If the final total score exceeds 60, it means that you have passed this course and can get 3 credits. If the total score does not exceed 60 points, you need to make up the exam; If you pass the make-up exam, you will get 3 credits; Fail the make-up exam, 0 credits. At this time, if you want to get credit for this course, you need to retake the exam.
Of course, credits are also divided into compulsory credits and elective credits.
Credits for compulsory courses cannot be supplemented by credits for other courses. Suppose there is a compulsory course, advanced mathematics, with a credit of 6. If you fail the exam and make-up exam, you must retake it. You can't take another course, 6 credits, and take a higher number later.
The credits of elective courses can be supplemented by other elective courses.