what is the difference between call by value and call by reference?

Question

Accepted Answer

Call by value passes a copy of the value while call by reference passes a reference to the value.

Call by value passes a copy of the value to the function while call by reference passes a reference to the value.
In call by value, any changes made to the parameter inside the function do not affect the original value outside the function.
In call by reference, any changes made to the parameter inside the function affect the original value outside the function.
Call by value is used for simple data types like int, float, etc. while call by reference is used for complex data types like arrays, structures, etc.

Accepted Answer

In call by value, a copy of the argument's value is passed to the function, while in call by reference, the function receives a reference to the actual argument in memory. Changes to the parameter in call by value don't affect the original, whereas in call by reference, modifications persist outside the function.

Accepted Answer

Call by value means that the value of the argument is copied into the parameter. Call by reference means that a reference to the argument is passed into the parameter

Accepted Answer

In call by value  way of parameter passing, the values of actual parameters are copied to the formal parameters of the function, and the two types of parameters re stored in separate memory regions. As a result, any changes made inside functions are not reflected in the caller's actual parameters.
In call by reference, both the actual and formal parameters refer to the identical locations and because of it, any changes performed within the function are reflected in the caller's actual parameters.

what is the difference between call by value and call by reference?

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