Learn QBASIC with Real Code Examples
Updated Nov 27, 2025
Installation Setup
Install MS-DOS or DOSBox emulator
Copy QBasic executable (QB.EXE) into DOS environment
Launch QBasic IDE via `QB.EXE` command
Use IDE editor to write programs
Run programs directly within the IDE or compile to EXE
Environment Setup
Install DOS or DOSBox
Place QB.EXE in DOS directory
Run QB.EXE to open IDE
Write and test code
Save or compile programs as needed
Config Files
QB.EXE - QBasic interpreter/IDE
*.BAS - source code files
*.EXE - compiled executables
DATA files - optional program input/output
NONE - minimal configuration required
Cli Commands
QB.EXE - start QBasic IDE
RUN - execute program in IDE
LIST - display code
SAVE filename.BAS - save program
LOAD filename.BAS - load program
Internationalization
Supports ASCII characters
No built-in i18n support
Custom strings must be manually translated
Limited to English or supported DOS code pages
No dynamic locale switching
Accessibility
Accessible on DOS or DOSBox environments
Keyboard input only
No support for mouse, touch, or web UI
Simple prompts for user interaction
Education-focused simplicity
Ui Styling
Text-based UI with PRINT and INPUT
Basic graphics via LINE, CIRCLE, PSET
No native colors or fonts beyond DOS
Optional ASCII art for visuals
Menus created with simple input prompts
State Management
Variables store program state
Arrays store structured data
Subroutines encapsulate temporary logic
No global concurrency or threads
Program state managed sequentially in memory
Data Management
Variables and arrays store data
Files for persistent storage
Text-based I/O for reading/writing data
Simple input validation manually implemented
Logs and debugging via PRINT statements