Difference Between Call By Value And Call By Reference

[Guest]

What is the difference between Call by Value and Call by Reference?

[Guest]

In call by value the copy of actual arguments has been p***ed while calling and in call by reference the address of the variables has been p***ed with a value.

[priya.sharma]

Call by value essentially means that a copy of the variable is p***ed into the function. The function does not modify the original variable if it writes to the function input variable. P*** by reference means that essentially the variable itself is p***ed. Writes to the function input variable apply also to the original variable, and no copy of the variable is made when calling the function.