Pointer value of *x &x and x

Question

suppose this code:

main()
{
    int *x;
    *x = 3;

    printf("%d %d %d\n", *x, &x, x);
    // output 3 5448392 2293524
}

if *x is the value; &x the addres; what does mean that value of x?

Answer 1

• *x is the value (correct)
• x is the address of the value. EDIT In your case, this address is uninitialized, so it is not pointing anywhere in particular (thanks Keith Nicholas for mentioning this).
• &x is the address of the [pointer that should contain the] address of the value.

(it's worth pointing out that your program may crash :)