Answer Posted / manjunathareddy

ByVal :- Byval is address the actual value of the variable.

Ex:- Function abc(Byval var)
var=var+1
End Function

Dim x:x=2
abc x
Msgbox x

In Above example 2 is the Actual value so it address the
actual value,the Result is 2.

ByRef:- ByRef is address the Location of the Stored variable.

Function abc(ByRef var)
var=var+1
End Function

Dim x:x=2
abc x
Msgbox x

In above example it 2 actual value but in byref it refers
the location of the stored variable the result is 3.

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