want to assign myself the adress of a pointer

I have the following code:

Code:

---


void new_reservation ()
{
        cout<<"Pick an available seat"<<endl;
        cin>>number_seat;
        number_seat=&seat;
}

---

I get the following error:
C:\avion.cpp(42) : error C2440: '=' : cannot convert from 'int *' to 'int'
This conversion requires a reinterpret_cast, a C-style cast or function-style cast
Error executing cl.exe.

is there any way I can make this work?
thx in advanced.

you never defined seat in the posted code..

I assume you've already had seat defined somewhere.

However in the posted code, you're grabbing number_seat from the user input and then assigning number_seat to the address of seat. Thus the user input never had an effect on the variable at all. Post more code. Not sure what you're trying to accomplish here.

int seat;

there, i assigned it for u.

I want the user to be able to give the adress. I'm making a program for seat reservations on a plane. For example, a person comes in and asks to reserve seat 5. I want the program to go to seat 5(which is the adress) and check to see if the value of it is either 1 or 0 (1 is occupied, 0 is empty). After I check the value i have this:

Code:

---

if (seat==0)
        {
                seat=1;
                cout<<"You have successfully reserved the seat"<<endl;
        }
        else
        {
                cout<<"Sorry. This seat has already been taken"<<endl;
        }

---

I agree with Cshot. I think you might have flipped the equation.

I'm still not sure why you have to grab the address of the variable seat. Wouldn't it be easier to use indexes into arrays?

For example:

#define EMPTY 0
#define FULL 1

int seat[NUMBER_OF_SEATS];
...

cin >> number_seat;
if(seat[number_seat] == EMPTY)
{
...
}
else
{
...
}

Quote:

---

Originally posted by Unregistered
int seat;

there, i assigned it for u.

---

you never initialized it :D

Don't play with me buddy :)

Cshot. I know I can use an array and it would work perfect. I'm just messing with pointers and trying to see all the things I can get out of them.

For the other guy:
seat=0;

there. initialized it for u.

I don't think this is the best example to try using pointers. When you declare seat, your system finds a spot in memory to store that variable. Thus, you cannot really change the address of seat, unless you're managing a block of memory. I think there is a confusion with your usage of the term "address". You can't have the user input any address and then you coming in messing with that location. It's protecting itself from you coming into random memory blocks and messing with it.

Thus, my suggestion is to declare a block of memory and then use the user input as an offset into your block. You can then check to see the status of the seat by using the base address of your memory block and adding the offset to it. This is basically like an index into an array.