This repository contains two implementations of a Grade Checker program in Python:

1. Single File Version - All functions in one file
2. Modular Version - Code organized into separate modules

File: grade_checker_single_file.py

This version contains all functions in a single Python file with clear separation of concerns.

• Input validation for student count and grades
• Conversion of numeric grades to letter grades (A-F)
• GPA calculation (4.0 scale)
• Class average and GPA statistics
• Formatted output table

python grade_checker_single_file.py

• get_student_count() - Gets number of students
• get_student_info() - Gets individual student name and grade
• get_all_students() - Collects all student data
• convert_to_letter_grade() - Converts numeric to letter grade
• calculate_gpa_points() - Converts letter grade to GPA points
• process_grades() - Processes all grades
• calculate_class_average() - Calculates class average
• calculate_class_gpa() - Calculates class GPA
• display_student_results() - Displays formatted results
• display_class_statistics() - Shows class statistics
• main() - Main program flow

This version separates the program into four focused modules:

Files:

• grade_checker_main.py - Main module (orchestrator)
• grade_checker_input.py - Input module
• grade_checker_logic.py - Logic/calculation module
• grade_checker_output.py - Output/display module

Handles all user input:

• get_student_count() - Validates student count
• get_student_info() - Gets student name and grade
• get_all_students() - Collects all student data

Handles all calculations and processing:

• convert_to_letter_grade() - Grade conversion
• calculate_gpa_points() - GPA conversion
• process_grades() - Process all grades
• calculate_class_average() - Class average
• calculate_class_gpa() - Class GPA

Handles all display and formatting:

• display_student_results() - Results table
• display_class_statistics() - Statistics display
• display_welcome_message() - Welcome message
• display_goodbye_message() - Goodbye message
• display_no_students_message() - No students message

Orchestrates the program:

• main() - Imports and coordinates all modules

python grade_checker_main.py

Note: When running the modular version, ensure all four module files are in the same directory.

Welcome to the Grade Checker Program!
----------------------------------------
How many students do you want to grade? 3
Enter name for student 1: Alice
Enter grade for Alice (0-100): 92
Enter name for student 2: Bob
Enter grade for Bob (0-100): 78
Enter name for student 3: Charlie
Enter grade for Charlie (0-100): 85

======================================================================
Student Name         Numeric Grade   Letter Grade    GPA Points
======================================================================
Alice                92.00           A               4.00
Bob                  78.00           C               2.00
Charlie              85.00           B               3.00
======================================================================

Class Statistics:
----------------------------------------
Class Average Grade: 85.00
Class Average GPA: 3.00
----------------------------------------

Thank you for using the Grade Checker Program!

• Python 3.6+
• No external libraries required

Created as a classwork assignment to demonstrate function organization and modular programming principles in Python.