What is the difference between pass by reference and pass by
value?
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Answer Posted / manila
Pass By Value:
1.It passes the actual value of parameter from the function
call.
2.Value of the parameter variable in calling functions
remains unchanged.
3.copy of the variable of actual parameter are made and
transfer to the formal parameter.
call By Reference:
1.the address of the actual parameter has to be transfered
2.the formal parameter in the function decleretion must of
pointer type.
3.Any changes in the formal parameter can change the value
of actual patameter.
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