Stack Expression Converter

Coursework project for Data Structures.

This project implements stack-based expression processing with native C logic and a Java GUI/JNI bridge.

Preview

Coursework Note

Built as an academic project to practice stack-based parsing, expression conversion, native C logic, and Java GUI integration.

Features

• Infix to postfix conversion
• Infix to prefix conversion
• Expression evaluation with variable assignments
• Unary minus handling
• Error reporting for invalid expressions
• Java Swing GUI connected to C through JNI

Tech Stack

• C
• Java
• JNI
• Stack
• Expression parsing

Build

Use the included Windows build script:

build.bat

Then run the Java GUI with the native library path configured for the generated library.

Screenshots

Basic conversion	Evaluation	Undo