Discussion Forum : Introduction To Methods And Streams
Question -

Which of these is correct about passing an argument by call-by-value process?

Options:
A .  Copy of argument is made into the formal parameter of the subroutine.
B .  Reference to original argument is passed to formal parameter of the subroutine.
C .  Copy of argument is made into the formal parameter of the subroutine and changes made on parameters of subroutine have effect on original argument.
D .  Reference to original argument is passed to formal parameter of the subroutine and changes made on parameters of subroutine have effect on original argument.
Answer: Option A

When we pass an argument by call-by-value a copy of argument is made into the formal 

parameter of the subroutine and changes made on parameters of subroutine have no 

effect on original argument, they remain the same.


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