Thread: Just to make sure I'm thinking right.

Code:

char arr[4] = { "a", "b", "c", "d" };

this array is being sorted to:
a = arr[0],
b = arr[1],
c = arr[2],
d = arr[3],
and \0 = arr[4].

I know I'm wrong, but I just don't understand where \0 goes to.

That is wrong.

You have an array of char that is 4 long. Into it, you are trying to put pointers to the strings "a", "b", "c" and "d", each of which contain one letter and one NUL character.

If you meant to use single quotes, you still got it wrong, as the array only has four entries. There is no arr[4] - it is the "fifth element of a four element array", and as such is definitely in the "undefined" section of programming - what it "contains" is very much depending on what the surrounding data is, and it could contain literally any value.

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Mats

Well if you'd written something which will compile, say this

Code:

char arr[4] = { 'a', 'b', 'c', 'd' };

then there would be no \0 at the end of the string

Neither does this have a \0

Code:

char arr[4] = "abcd";

When you have a text string and there's enough space in the array.

E.g.

Code:

char arr[5] = "ABCD";
char arr[] = "ABCD";
char arr[] = { 'A', 'B', 'C', 'D' };
char *str = "ABCD";

Just some variatins on the theme.

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Mats

Yes, there will be "enough zero's to fill the array", because ALL initialized data is "filled with zeros for anything that you haven't specifically defined".

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Mats