Boolean values: Difference between revisions
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>>> bool("False")
True</lang>
=={{header|QBasic}}==
QBasic, QuickBASIC, VB-DOS and GW-BASIC doesn't have a Boolean type. What it does is to take 0 as False, and any other value as True. The easiest way in QBASIC, QuickBASIC and VB-DOS is to create False and True constants of type Integer and, then, use them as needed:
<lang QBASIC>
CONST FALSE=0
CONST TRUE = Not FALSE
Print FALSE
Print TRUE
</Lang>
In GW-BASIC you can create a variable called FALSE% and other called TRUE% and do the same. Nevertheless, is more sure to create functions in order to avoid the value to be manipulated:
<lang QBASIC>
10 DEF FNFALSE = 0
20 DEF FNTRUE = NOT FNFALSE
30 Print FNFALSE
40 Print NFTRUE
</Lang>
=={{header|R}}==
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