QBasic

Article summary

QBasic is an integrated development environment (IDE) and interpreter for a variety of dialects of BASIC which are based on the QuickBASIC compiler and the QuickBASIC Interpreter. Code entered into the IDE is an intermediate representation (IR), and this IR is immediately executed on demand within the IDE. Like QuickBASIC, but unlike the earlier versions of MBASIC and GWBASIC, QBasic is a structured programming language, supporting constructs such as subroutines. 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a concept often associated with BASIC, are supported for compatibility but are not considered good form, having been replaced by descriptive line labels. QBasic has limited support for user-defined data types (structures), and several primitive types used to contain strings of text or numeric data. It supports various inbuilt functions. For its time, QBasic provided a state-of-the-art IDE, including a debugger with features such as on-the-fly expression evaluation and modifications in code

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