Computing: Free Pascal Programming

My Free Pascal Console Programs.

About the applications on this page.

All downloads on this side are provided free of charge and without any warranty of any kind. You may use them as you like, but if you do so, it's entirely on your own risk! Please, have a look at this Web site's disclaimer for further details. The programs on this page are text-based (non-graphical) programs, running in a console, such as MS Windows Command Prompt. The executables on this site have been compiled for a Windows 64bit platform. The sources of most of them should be suitable without greater modifications to create binaries for Windows 32bit, Linux, Mac OS and even FreeDOS. Just recompile them on the platform where you want to execute them. If you just want to run the program, use the icon in the Exec column to download the executable (if it needs supplementary files such as data, these are normally packed with the executable in the .zip download archive). If you are interested in the code or want to recompile the program (to adapt it to your needs or to use it on a different platform), use the icon in the Source column (the download file will be a .zip archive with all relevant files, NOT including any executables). To view the description of the program (including Lazarus/Free Pascal features and screenshots), click the program name in the Program column.

Program list:

Domain	Program		Language	Description	Exec	Source
Biology	Hardy-Weinberg Law			Population genetics: Calculating the Hardy-Weinberg equilibrium frequencies
Chemistry	Chemical equations			Simple command line program to balance chemical equations
Computing	Directory compare			Compare the content of two (Windows) directories
	Downloads count			Simple command line program to determine the count of the monthly downloads from a webside
		Linux file permissions		Interactively change Linux file permissions
	Lockscreen pictures			Very simple command line program to copy the Windows 10 lockscreen pictures to a user directory
	Text file merge			Simple text file merge command line program
	Text file sort			Simple text file sort command line program
Games	Simple Blackjack			Simple Blackjack command line card game
	Snake game			Classic Snake game (console version)
Mathematics	Arithmetic baubles			Arithmetic problems for primary school pupils (console version)
	Burning Ship fractal			Burning Ship fractal program. Very simple (text based X-/Y-scaling and zooming), but nice pictures
	Complex equations			First degree complex equations in 1 variable
	Complex equations II			Second degree complex equations in 1 variable
	Complex roots			Determination of all nth roots of a complex number
	Cubic equations			Resolution of cubic equations in one variable (ax3 + bx2 + cx + d = 0)
	de Jong attractors			Mathematical images: Peter de Jong attractors
	Julia sets			Quadratic Julia sets program. Very simple (text based X-/Y-scaling and zooming), but nice pictures
	Linear equations			Resolution of linear equation systems in one, two or three variables
	Lines in the plane			Geometry in the plane: Line passing through 2 points
	Lines in the plane II			Geometry in the plane: Parallel lines; lines intersection point
	Mandelbrot set			Mandelbrot set program. Very simple (elementary scaling and zooming), but nice pictures
	Quadratic equations			Resolution of quadratic equations in one variable (ax2 + bx + c = 0)
Various	3-month calendar			Multi-lingual calendar with 3 months display. Use cursor and PF keys to change month, year or language
	Morse alphabet			Character or complete text translation (from or to morse code). Morse alphabet knowledge test