what you mean by call by value and reference ,funtions.

Question

Accepted Answer

Call by value and reference are two ways of passing arguments to functions.

Call by value passes a copy of the argument's value to the function.
Call by reference passes a reference to the argument's memory location to the function.
Functions that use call by value cannot modify the original value of the argument.
Functions that use call by reference can modify the original value of the argument.
In some programming languages, call by reference is achieved using pointers.
Example: int x = 5; foo(x); // call by value, x remains 5
Example: int y = 10; bar(&y); // call by reference, y is modified to a new value

Accepted Answer

"Call by value" and "call by reference" are terms used to describe how arguments are passed to functions in programming languages.

In "call by value," a copy of the actual value is passed to the function. Any changes made to the parameter within the function do not affect the original value outside the function.

In "call by reference," a reference to the memory location of the original value is passed to the function. Any changes made to the parameter within the function directly affect the original value outside the function.

Different programming languages may use these mechanisms differently, and some languages offer the ability to choose between them or use a combination of both.

what you mean by call by value and reference ,funtions.

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