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                        QBASIC     The name QBasic is an acronym for Quick Beginners All Purpose Symbolic Instruction Code. It was developed and launched by Microsoft in the year 1991 and is considered to be one of the most ideal languages for absolute beginners. It was intended as a replacement for GW-BASIC. QBasic was based on earlier QuickBASIC 4.5 compiler. It does not produce .exe files but instead generates files with extension .bas which can only be executed immediately by the built in QBasic interpreter. It is based on DOS operating systems but is also executable on windows. QBasic consists of two windows: Program Window:  The window titled as ‘Untitled’ is the program window. It is the place where program/code is written Immediate Window:  The window below Program Window titled as ‘Immediate’ is the immediate window. This window is used as a debugging tool and is used when the user wants to check th...