QBASIC Full Form

Quick Beginner's All-Purpose Symbolic Instruction Code is the full name of QBASIC. The world over, this has been used in computer and programming languages.

Microsoft created Quick Beginner's All-Purpose Symbolic Instruction Code (QBasic), a version of the well-known BASIC programming language. It appears that the computer language QBasic has a structured syntax.

It was developed and launched by Microsoft in the early 1990s, and is regarded as one of the best languages for total novices. This was intended to be a stand-in for (GW-BASIC). Built on earlier technology, QBasic (QuickBASIC 4.5 compiler). Instead of producing (.exe) files, this produces files with the (.bas) extension that can be run immediately by the built-in QBasic compiler. Although it was created for the DOS operating system, this can also operate on Windows.

History

The goal was to replace GW-BASIC with QBasic. Although it lacked QuickBASIC's compiler and linker, it was based on the older QuickBASIC 4.5 compiler. Version 1.0 was distributed with Windows 95, Windows NT 3. x, and Windows NT 4.0 in addition to MS-DOS 5.0 and higher. QBasic was recompiled by IBM and added to PC DOS 5. x and OS/2 2.0 and later. [5] QBasic 1.0 is present in eComStation and ArcaOS, both of which are based on OS/2 code. Without EDIT, Windows 95, Windows 98, and Windows Me all come with QBasic 1.1. It is also included with MS-DOS 6. x. Microsoft stopped including QBasic in its operating systems with Windows 2000, but it is still available for use with later iterations of Windows.

QBASIC Basic Commands That Are Useful:

• PRINT: This command prints the statement or data that was written after it. If the data to be published is a string, it must be written inside double quotation marks (" "); otherwise, if it is a number or variable, it can be written plainly.

• INPUT: Data and user input are gathered using the INPUT command. It accepts input in both textual and numeric formats. If the input taken is a numerical value, the name of the variable where the data will be kept is written right after the INPUT instruction.

The variable name into which the data should be put is written following the INPUT command, followed by $ if the data being taken is a string.

• CLS: If the screen still contains parts of the earlier outputs or results, CLS, which stands for Clear Screen, is used to clear the screen.

Two Windows Of QBASIC

• Software Window: The window marked "Untitled" is the application window. It is the location where programmes and codes are made.

• Immediate Window: The window with the label "Immediate" that is situated below the Program Window is the immediate window. As a debugging tool, the user can utilise this window to see the result of a single sentence.

Rules Of QBASIC

The following are some QBASIC language guidelines that must be adhered to while writing programmes in any programming language:

• Every programme written in QBasic is composed of a series of statements that are executed in the order in which they are written.
• There should be at least one QBasic command word in every sentence. Keywords are the words that BASIC can identify.
• All command words must be written by a set of rules known as "Syntax Rules." The grammar of a language's statement writing is called syntax.

QBASIC's Application

• QBasic is the finest language for beginners to start with. It teaches people how to programme without worrying about how computers work.
• The simplicity and ease of use of QBasic make it ideal for creating corporate applications, simple databases, and games.
• It gives programmers the tools they need to make graphics in QBASIC, including commands like SET, CIRCLE, LINE, and others. QBasic can therefore be used to create visuals.
• Additionally, QBasic enables you to create sounds for your computer's speakers at any desired frequency. However, just one sound is audibly played.

Benefits Of QBASIC

• The language's closeness to English is its defining characteristic.
• Your code's syntax is automatically checked.
• Dynamic programme debugging is a feature of Qbasic.
• It is possible to divide lengthy programmes into smaller modules.

Drawbacks Of QBASIC

• There is no structure to the language.
• Qbasic is DOS-based, no longer supported, and is only valid for teaching and programming.
• It is not a programming language for professionals.
• The language does not make sense.
• It's challenging to comprehend.
• Outside of education and training, it is hardly ever used in real life.