Question

string str;
stringstream buffer;

buffer << is.rdbuf();

str = buffer.str();

cout << str.length();
size_t pos = str.find_first_not_of(".123456789");

Can someone please explain to me why this code doesn’t work?

When I run it, it just sits there after I enter “12345”

What on earth is going on?! I’m not too familiar with stringstreams but why wouldn’t this, and other seemingly mundane operations work as expected?

Answer 1

Maybe this is what you are looking for:

string str;
getline(is,str);
cout << str.length();
size_t pos = str.find_first_not_of(".123456789");