3. Storing address of a variable

Could we store an addresses of variables in our program?

int main( )
{
    int x = 5;
    double d = 0.1;

    // Variable sizes:
    int x_bytes = sizeof( x );
    int d_bytes = sizeof( d );

    // Take and store variable addresses:
    int x_addr = &x;
    int d_addr = &d;

    return 0;
}

But why the code does not compile?..

• ...because an address needs a special type of storage!