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Boolean values: Difference between revisions
→{{header|BASIC256}}
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print true
</lang>
=={{header|Batch File}}==
The closest thing to Boolean values in batch files is using <code>if defined</code>.
If a variable has any value, it will evaluate to true.
You can make a variable false by clearing its value <code>set "var="</code>.
<lang dos>
@echo off
::true
set "a=x"
::false
set "b="
if defined a (
echo a is true
) else (
echo a is false
)
if defined b (
echo b is true
) else (
echo b is false
)
pause>nul
</lang>
'''Output:'''
<pre>
a is true
b is false
</pre>
=={{header|BBC BASIC}}==
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