関連ワード:  what is function call by reference    what is function explain call by reference mechanism    what is function calling method call by reference    what is function call by value and call by reference    what is call by reference function in c    what is call by reference method    what is function explain call by value and call by reference    what is function differentiate call by value and call by reference    define function call by value and call by reference    what is function explain call by value and call by reference with example