What is call by value and call by refrence

Question

Accepted Answer

Call by value and call by reference are two ways of passing arguments to a function in programming.

Call by value passes a copy of the value to the function.
Call by reference passes the memory address of the value to the function.
In call by value, changes made to the parameter inside the function do not affect the original value.
In call by reference, changes made to the parameter inside the function affect the original value.

Accepted Answer

While calling a function, we pass values of variables to it. Such functions are known as “Call By Values”. While calling a function, instead of passing the values of variables, we pass address of variables(location of variables) to the function known as “Call By References.

What is call by value and call by refrence

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