how OBASIC was evolved
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QBasic is an integrated development environment (IDE) and interpreter for a variety of dialects of BASIC which are based on QuickBASIC. Code entered into the IDE is compiled to an intermediate representation (IR), and this IR is immediately interpreted on demand within the IDE.[1]
QBasic
QBasic Opening Screen.png
Paradigm
Procedural
Developer
Microsoft
First appeared
1991; 30 years ago
OS
MS-DOS, Windows 95, Windows 98, Windows Me, PC DOS, OS/2, eComStation, ArcaOS
License
Proprietary
Influenced by
QuickBASIC, GW-BASIC
Influenced
FreeBASIC, QB64, SmallBasic
Like QuickBASIC, but unlike earlier versions of Microsoft BASIC, QBasic is a structured programming language, supporting constructs such as subroutines.[2] Line numbers, a concept often associated with BASIC, are supported for compatibility, but are not considered good form, having been replaced by descriptive line labels.[1] QBasic has limited support for user-defined data types (structures), and several primitive types used to contain strings of text or numeric data.[3][4] It supports various inbuilt function