[C++] Passing Arrays as reference

[saiz66]

How do I pass arrays by reference?? Thanks in advance.

[Genesi]

int sum_arr(int arr[], int) //using index notation

is the same as

int sum_arr(int * arr, int) //passing by address

Not sure if this helps.

When passing an array by an address you are really passing by a pointer. When this is the case the pointer pointers to the first index within the array.

Edited August 7, 2004 by Genesi

[saiz66]

thank u genesi again!

int sum_arr(int * arr, int) //passing by address

in my main program would I pass it like this?

int arr[50];

sum_arr(arr, int) ?

I have a way of forgetting things... any resource available online where they have examples to refresh my memory?

Edited August 8, 2004 by saiz66

[kjordan2001]

thank u genesi again!

int sum_arr(int * arr, int) //passing by address

in my main program would I pass it like this?

int arr[50];

sum_arr(arr, int) ?

I have a way of forgetting things... any resource available online where they have examples to refresh my memory?

Yes, although I'm sure he forgot size for the name of the second parameter, since in C you can't really tell the size of an array when it gets passed.

[saiz66]

oh okay.. thanks kjordan!!!!!