A teacher uses a paper-based system to store marks for a class test. The teacher requires a program to assign grades based on these results. The program will output the grades together with the average mark. Write a detailed description of the algorithm that will be needed.

Mark scheme

Marking points from the official mark scheme (May/June 2021). The mark or mark type is shown in brackets.

1. [1] Reference variables for Count of students and Total marks
2. [1] Loop through all students (Count)
3. [1] Input individual mark (in loop)
4. [1] Compare mark with threshold / boundary values to determine grade (in loop)
5. [1] Output the grade for a student (in loop)
6. [1] Maintain a Total (and Count if required) (in loop)
7. [1] Calculate average by dividing Total by Count and Output (after loop)