PROJECT: A Simple Student Grade Checker
This project helps you practice:
Writing and calling functions
Using variables to store values
Using conditionals (if, elif, else) to make decisions
WHAT THE PROGRAM SHOULD DO
Ask the user to enter a score (0–100).
Use a function to convert the score into a grade:
70–100 → A
60–69 → B
50–59 → C
45–49 → D
40–44 → E
0–39 → F
Print the result back to the user.