: Added support for user-defined types (records), long integers, and IEEE-format floating-point numbers.
Microsoft QuickBASIC 4.5 (QB4.5), released in 1988, is widely considered the definitive version of the QuickBASIC line. It represented a major leap forward from the line-number-based GW-BASIC, introducing a modern Integrated Development Environment (IDE) and a true compiler that allowed developers to create standalone executable (.EXE) files. Key Features and Advancements Qb45 Quickbasic 4.5
: Replaced line numbers with labels and introduced subprograms (SUB) and functions (FUNCTION), enabling modular, reusable code. : Added support for user-defined types (records), long