Formal arguments | types of Formal arguments | call by value | Call by address | call by reference |

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 Types Of Formal Arguments : 

It is of three types ------------

1.  ordinary variable  of any type

2.  pointer variable

3. reference variable

Call by value :  

                      when formal arguments are ordinary variables , it is function call by value.

int sum(int x , int y) 

{

}

Call by address :

                 when formal arguments are pointer variables , it is function call by address.

int sum(int *x , int *y) 

{

}

call by reference :

                 when formal arguments are reference variables , it is function call by reference.

int sum(int &x , int &y) 

{

}

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