Unary Negative Operator in Liberty BASIC

[EricE]

Hello Liberty BASIC forum.

Why is it that using the Unary Negative Operator (-) will result in Liberty BASIC reporting a syntax error.

For example, this will cause an error.

a = 4
Print -a

While subtracting a from zero will run without error.

a = 4
Print 0-a

Is there a workaround to change the sign of a variable other than subtracting it from zero?

[tenochtitlanuk]

Unary minus has long been a request.
Using '0 -a' is the work-round

OR

Use the alpha releases of LB5 which handle unary minus.

a =-1
print a
print -1
gives
-1
-1

[EricE]

Thank you tenochtitlanuk.