Is this legal?

[PeterHu]

Is below if statement legal?Thanks in advance.

Printing result:"myByte contains 8"

Code: Select all

	dim as integer myByte= 6
	if myByte and 8 = 8 then
		print "myByte contains 8"
	else
		print "myByte does not contain 8"
	end if

[marcov]

Probably parenthesis due to C style auto testing integers for 0 and same worth for bitwise and logical AND.

I.e. (mybyte) and (8=8) vs (mybyte and 8 )=8

[fxm]

In the Operator Precedence documentation page, you can see that the '= (equal)' operator (do not confuse with the assignment operator) has a precedence higher than the 'And' operator.

So:
'if myByte and 8 = 8 then'
is parsed as:
'if (myByte) and (8 = 8) then'.

To go against the operator precedence, you must insert parentheses:
'if (myByte and 8) = 8 then'

[PeterHu]

Thank you both.

This is great the language does not require that the parentheses are mandatory in IF statement unless certain situation takes place.

[angros47]

You can also replace "and" with "AndAlso" (that is more appropriate, in such a situation, actually)

Original BASIC used bitwise AND as logical AND, as well, and it didn't make a real difference because it was supposed to work mostly with variable comparisons. But when used with function results, using logical or bitwise operator produces different results

[PeterHu]

You can also replace "and" with "AndAlso" (that is more appropriate, in such a situation, actually)

Original BASIC used bitwise AND as logical AND, as well, and it didn't make a real difference because it was supposed to work mostly with variable comparisons. But when used with function results, using logical or bitwise operator produces different results

Thank you!!