Write the array notation as pointer notation

The question is &str[2], if I write str+2 then it would give the address and its logical but whe开发者_StackOverflow社区re did I used pointer notation in it?

Should I prefer writing &(*(str+2))?

You can use either

&str[2]

or

(str + 2)

Both of these are equivalent.

This is pointer arithmetic. So when you mention an array str or &str you refer to the base address of the array (in printf for example) i.e. the address of the first element in the array str[0].

From here on, every single increment fetches you the next element in the array. So str[1] and (str + 1) should give you the same result.

Also, if you have num[] = {24, 3}

then num[0] == *(num + 0) == *(0 + num) == 0[num]