Fill in grade using a switch expression so that it returns a letter: 5 → "A", 4 → "B", 3 → "C", anything else "F".
grade
5 → "A"
4 → "B"
3 → "C"
"F"
Use arrow labels and a default — for an int switch it is required. The program prints A, C, F.
default
int
A
C
F