Python vs. QBasic vs. Swift vs. Tcl Comparison Chart

QBasic as well as QuickBasic is an easy-to-learn programming language (and therefore ideal for beginners), based on DOS operating system, but also executable on Windows. QBasic is the slimmed-down version of QuickBasic. Compared to QuickBasic, QBasic is limited as it lacks a compiler. Therefore QBasic cannot be used to produce executables (.exe files). The source code (usual files with .bas extension) can only be executed immediately by the built-in QBasic interpreter. Furthermore, QuickBasic has a more extensive command set than QBasic. The best way to learn to program is to start with a lightweight programming language and a simple compiler. Qbasic (short: QB) has great advantages for pros and beginners that other compilers can't offer. Back then, when DOS was the most widely used operating system, QB IDE enjoyed great popularity. On current Windows systems, QBasic/QuickBASIC requires a DOS emulator, e.g. DOSBox.

Tcl is a very simple programming language. If you have programmed before, you can learn enough to write interesting Tcl programs within a few hours. This page provides a quick overview of the main features of Tcl. After reading this you'll probably be able to start writing simple Tcl scripts on your own; however, we recommend that you consult one of the many available Tcl books for more complete information. Each Tcl command consists of one or more words separated by spaces. In this example there are four words: expr, 20, +, and 10. The first word is the name of a command and the other words are arguments to that command. All Tcl commands consist of words, but different commands treat their arguments differently. The expr command treats all of its arguments together as an arithmetic expression, computes the result of that expression, and returns the result as a string. In the expr command the division into words isn't significant.