LabVIEW
Ranking Students Grade - LabView Error
As has been said, your code has significant faults and we cannot really help in detail, because we are missing important information.
- How can you ever get "no result" as letter grade? The weighted average would need to be negative. Is that allowed? Are the various exam results always guaranteed to be in the range 0..100?
- You have gaps in your logic, for example averages in the range of XX.9 and XX.99999999 are missed as has been pointed out.
- What is the purpose of the second loop. The rank can only be calculated if the input is sorted by average, which it is not. Reversing the array makes no sense. Should the final array be sorted by rank, by student name, or in the original order?
Since you seem to prefer pictures instead of VIs (else you would have attached your VI and some typical data! 🙂 ), here's a "picture" of one possibility:
(If you want the output in a different sort order a few small modifications should do it)
@altenbach wrote:
Since you seem to prefer pictures instead of VIs (else you would have attached your VI and some typical data! 🙂 ), here's a "picture" of one possibility:
(If you want the output in a different sort order a few small modifications should do it)
Missing tie ranks. Needs a threshold to rank ties to lower rank and skip next. i.e. grades 95, 95, 80, 80, 70 should rank 1, 1, 3, 3, 5. Use 100 - Grades[] sorted as with ANY LEAST ERROR calculation
Well, tie ranks are not mentioned in the poor problem description, but could be implemented with tiny code changes. I won't go far past a code skeleton until all requirements are outlined. 🙂
Should the rank be based on weighted average or letter grade? How many matching decimal digits are needed to consider two floating point values "equal enough" for a tie? What a can of worms!
