QB2C: QBasic to C (Ncurses) Transpiler

QB2C is a single-file C program designed to transpile a subset of QBasic code into C code utilizing the Ncurses library for terminal I/O. This allows simple QBasic programs to be compiled and run on modern Linux/Unix systems.

Workflow

Compile the Transpiler:

gcc qb2c.c -o qb2c

Transpile the QBasic File (.bas):

The transpiler reads the QBasic file and outputs the generated C code to standard output, which should be redirected to a new .c file.

./qb2c demo.bas > demo.c

Compile the Generated C Program:

The generated C code must be linked against the Ncurses library (-lncurses).

gcc demo.c -o demo -lncurses

Run the Executable:

./demo

Supported QBasic Features

• REM and ' (Comments)
• CLS (Clear screen)
• PRINT (Outputting strings and variables; supports ; separator)
• INPUT (Receiving input for numeric and string variables)
• LET (Implicit assignments for numeric and string variables)
• IF...THEN...ELSE...END IF (Conditional blocks)
• FOR...NEXT Loops (Iterative blocks)
• SLEEP (Uses napms for pausing execution)
• GOTO and Labels (Jump statements)

Known Issues (Current State)

• FOR loops in the demo may not produce correct results.
• Future enhancements could include support for WHILE/WEND or SUB/END SUB.

License

This project is licensed under the MIT License. See the LICENSE file for details.