BASIC was developed by Microsoft into several platforms, including QBasic and Visual Basic. Visual Basic has object oriented features and includes a drag and drop user interface toolset. These tools are proprietary and generally only work on Microsoft Windows. Other dialects of BASIC exist for various platforms, such as REALbasic.
Here is an example of the 100 doors problem:
' Define an array of 100 doors DIM doors(0 TO 99) ' Process the doors FOR pass = 0 TO 99 FOR door = pass TO 99 STEP pass + 1 ' Toggle the door doors(door) = NOT doors(door) NEXT door NEXT pass ' Print out the results FOR i = 0 TO 99 PRINT "Door #"; i + 1; " is "; IF NOT doors(i) THEN PRINT "closed." ELSE PRINT "open." END IF NEXT i
BASIC is a simple language which is easy to learn. It provides a simple set of semantic constructs and data types. There are many free software implementations, but unfortunately the most typically used implementation is proprietary (Microsoft Visual Basic).