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Difference Between Call By Value and Call By Reference?
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Answer Posted / ravi s. sharma
In call by value, a copy of value known as(actual argument)
is passed to the function known as(formal argument). Both
values are stored at different locations and scope. The
changes made in a copy(formal argument) does not affect the
original value(actual argument).
In call by reference, a reference/address of variable known
as(actual argument) is passed to the function known
as(formal argument) which is stored in a
pointer/ref.variable. The changes made in a function
(through pointer/ref. variable) affect the original
value(actual argument).
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