Difference between call by value and reference by value?

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Accepted Answer

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

Call by value passes the value of a variable to a function, while reference by value passes the reference to the variable.
In call by value, any changes made to the parameter inside the function do not affect the original variable outside the function.
In reference by value, any changes made to the parameter inside the function affect the original variable outside the function.
Call by value is used for simple data types like int, float, etc., while reference by value is used for complex data types like arrays, objects, etc.
Example of call by value: int a = 5; function(a); // value of a remains 5
Example of reference by value: int[] arr = {1, 2, 3}; function(arr); // changes made to arr inside function affect the original arr

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