Char * max long

[alnorte]

Hi!!
I need to know if it is possible to show the maximum length that is defined a string. I explained it with a example

void charLong(char *a){
  cout <<"a defined max long = "<<a-><FUNCTION>;
}

int main() {
  char str[40];
  charLong(&str);
  return 0;
}

that the result was
a defined max long = 40.

I know that exist strlen() but this show only the length that is used, I need the definition length

is it possible?

[MikeyBoy]

It's not possible to query a C-style array to find its length. That's something you'll have to store and manage yourself.

You'd be much better off learning to use the std::string class, rather than an old-fashioned C-style char* array.

[coder777]

in charLong() the information about the size of the buffer a is lost. you need to pass that as a second parameter