pointer . substr

error is "left of ".substr" must have class/struct/union type.

Shortened version of my code

Code:

---

std::string newtext;
std::string * p;

//newtext derived from function

p= &newtext;

while (!isalpha(*p.substr(counter, 1)) & (counter <=maxlen))
{
}

---

error is on the while line. What is wrong?

try

(*p).substr(counter, 1)

or

p->substr(counter, 1)

and if it works, then look up the topic of operator precedence.

thanks.