[RESOLVED] How to access the value to which const char* const points?

[monday-to-friday]

Hi,

I need to check if the pointer const char* const points to an empty string.

Something like this:

const char* const a = ...
if (&a == "") {
   cout << "empty string!";
}

However, the code above gives me an error:
error C2446 '==': no conversion from 'const char*' to 'const char *const *'

so I guess I am doing something wrong.

Could someone help please?

Thanks.

[monday-to-friday]

I mean I don't actually assign anything to 'a' myself (just realised that the line

const char* const a = ...

would probably not work and might just confuse everybody).

[GCDEF]

& is the address of operator. Your code is attempting to get the address of a pointer. There are several options, assuming the pointer is not null, including...

if(a[0] == 0)

if(strlen(a) == 0)

[monday-to-friday]

GCDEF, thanks for your reply.

I just found another option that seems to work:

if (*a == '\0')

Is this also a correct way?

[GCDEF]

GCDEF, thanks for your reply.

I just found another option that seems to work:

if (*a == '\0')

Is this also a correct way?

That's fine too.

[monday-to-friday]

Thanks