Difference between pass by reference and pass by value?

Question

Accepted Answer

Pass by reference passes a pointer to the value. This allows the caller to modify the
variable directly.Pass by value gives a copy of the value to the caller. This allows the callee to modify the value without modifying the variable. (In other words, the callee simply can not modify the variable, since it lacks a reference to it.)

Difference between pass by reference and pass by value?

Answer with Explanation