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06cs44-Object-oriented-programming-with-c-->View question

Pass by reference, method and value C++ (programming)

What is difference between variable passing by different methods? i.e. Pass by value, pass by function and pass by method, in C++?


Asked On2021-12-28 03:50:44 by:Akshay-Telmasare

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Pass by value:-
  • This method uses in-mode semantics. 
  • Changes made to formal parameters do not get transmitted back to the caller. 
  • Any modifications to the formal parameter variable inside the called function or method affect only the separate storage location and will not be reflected in the actual parameter in the calling environment. This method is also called call by value.
Pass by reference:-
  • This technique uses in/out-mode semantics. 
  • Changes made to formal parameters do get transmitted back to the caller through parameter passing.
  •  Any changes to the formal parameter are reflected in the actual parameter in the calling environment as the formal parameter receives a reference (or pointer) to the actual data. This method is also called a call by reference
  • This method is efficient in both time and space.

Answerd on:2022-02-15 Answerd By:sarthak

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