🧑‍🎓Student Grades Sorting and Analysis System🎓

A simple and interactive program using C programming language for managing, sorting, and analyzing student scores — complete with grading, academic warnings, and detailed statistics.

Caution

This program was made with Indonesia language, to avoid confusion please use translator.

📌 Project Overview

This project is a console-based application written in C language and has a purpose to able helps users (for a teachers, assistants, or students) to:

• Input student names and scores
• Automatically assign letter grades (A+ to E)
• Sort scores from highest to lowest
• Display detailed score statistics
• Provide academic warnings for failing students (Grade E)
• Use colored output for a friendly CLI experience (ANSI Escape Codes)

🛠 Features

• Score input with validation
• Letter grade calculation
• Bubble sort algorithm (descending order)
• Highlight students with failing grades
• Grade distribution summary
• Interactive CLI with color formatting
• Option to restart or exit the program

Important

Make sure the program is runs in a terminal like Ubuntu's (or other ANSI-compatible terminals) because it uses ANSI Escape Codes to display colored and formatted text output 🟥🟩🟦🟨. Here's an example image of WSL in 🪟Windows Terminal:

Algorithms Used

1. Bubble Sort (Descending Order)

This function used to sort student scores in descending order.

for (int i = 0; i < jumlah - 1; i++) {
    for (int j = 0; j < jumlah - i - 1; j++) {
        if (mahasiswa[j].nilai < mahasiswa[j + 1].nilai) {
            // Swap students
        }
    }
}

2. Grade Mapping

This function has a purpose to maps numerical scores into standard letter grades (A+, A, ..., E).

if (nilai >= 95.0) return "A+";
else if (nilai >= 90.0) return "A";
// ...
else return "E";

Key Features of the Program

• Interactive and beginner-friendly interface
• Strong input validation to avoid incorrect entries
• Visually appealing output using colored text
• Displays detailed statistics:
• Highest and lowest score
• Average score
• Number of students per grade
• Academic warning alert for students who receive E

Weaknesses of the Program

• Uses Bubble Sort, whic is inefficient for large datasets (O(n²) complexity)
• No file saving feature, meaning all data will be lost once the program is closed
• No search or data editing features
• Text-based only, no graphical interface/no GUI interface.

Based on the weaknesses mentioned above, I believe I can still improve this program by adding more useful features.

Why I Created This Program

I developed this program because I wanted to create a simple tool that would help teachers, lecturers, or teaching assistants manage student grades more easily.

Program Execution

The total number of students you can input must be at least 3 and at most 100. Also, this total should be an integer (INT).

As you can see, when I tried entering a student's name as a number, it was rejected ❌. Likewise, entering a student grade as text (varchar) is also not allowed. The names should be VARCHAR (text), and the grades should be INT (numbers).

Code Programs:

If you want to try out the programs or have any ideas to improve them, here’s the link to the code above in the same repository:

View Grade-Analyzer.c on GitHub

P.S. I promise to add English versions of these programs in the future