Thread: incompatable type for argument 1 of enter address

i have this code:

Code:

#include <stdio.h>
#include <stdlib.h>

typedef struct
{
    int door_number;
    char street;
    char town;
    char county;
    char postcode;
}Address;

void enter_address(Address *p_address)
{
    p_address->door_number = 1;
    //etc etc
}
int main()
{
    int i;
    Address book[20];

    for (i = 0; i < 20; i++)
    {
       enter_address(book[i]);
    }
    return 0;
}

i know the solution is to call enter address like this

Code:

 enter_address(book + entrys)

but what i don't understand is why since array[1] is the same as array + 1

is this just another example of c stands for contrary

Because [] dereferences.

> but what i don't understand is why since array[1] is the same as array + 1
Except it isn't.

book is an array.

In the context of calling a function, enter_address(book) is just the same as enter_address(&book[0])

In short, enter_address(book+i) and enter_address(&book[i]) are the same thing, and what you want.

enter_address(book[i]) is something completely different.