Using Pointers in a function

I am learning C, and am am trying to create my own "swap" function for practice that takes in two numbers and puts them in two different variables. I then set one pointer to each. This is where I get stuck.

What should I pass into the function parameters: by this I mean do I pass say, *num1, or the address it points to, num1. I am confused. Please provide code examples.


Thanks

Yes, the address.

Code:

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void swap( int* a, int* b );

int main( void )
{
        int
                i,
                j;
        swap( &i, &j );
        int
                * p = &i,
                * q = &j;
        swap( p, q );       
}

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Quote:

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Originally Posted by greeneyehawk

Please provide code examples.

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It will probably be easier if you provide code examples. But I think Sebastiani might have nailed this one.

I'm assuming you know how memory addresses work. I'm also assuming other people will post code for you. This is just how I learned how pointer operators work.

* gets the value at an address
& gets the address of a value

That's it. They really aren't that complicated once you understand them

Thank you so much, I got it. :)