Write an algorithm to determine a students final grade and indicate whether it is passing or failing the final grade is calculated as the average of four marks ?

1. Start
2. Initialize variables: mark1, mark2, mark3, mark4, average
3. Read mark1, mark2, mark3, mark4 from user
4. Calculate average = (mark1 + mark2 + mark3 + mark4) / 4
5. If average >= 50, then
- Print "Final grade: " + average
- Print "Passing"
Else
- Print "Final grade: " + average
- Print "Failing"
6. End