Critical Thinking Questions
Case 7-2
Your colleague hasn't used Visual Basic in a while and so when he encounters a decision point, he sometimes calls out to you over the cubicle wall to get answers to his questions.
-He wants help remembering which method of passing an argument will give the Sub procedure access to the value of the passed argument without actually referencing the variable declared in the calling procedure.Which of the following do you suggest to him?
A) ByVal
B) ByRef
C) ByArg
D) ByInd

Question

Quizplus · Accepted Answer

The correct method of passing an argument in this case is A) ByVal. This method passes the value of the argument without passing the reference to the variable declared in the calling procedure, thus ensuring that any changes made to the argument in the Sub procedure do not affect the original value of the argument in the calling procedure. By contrast, B) ByRef passes a reference to the variable declared in the calling procedure, meaning any changes made to the argument in the Sub procedure also affect the original value of the argument in the calling procedure.  C) ByArg and D) ByInd are not valid methods of passing arguments in Visual Basic.

Critical Thinking Questions Case 7-2