Weird behavior when using stringstream

[kalahan]

When I am using string stream twice it does not
accept the value second time
weird thing is same does work if the string passed before contains a space

stringstream ss;
string s1,s2;

s1 = "aaaaa";
ss.str(s1);
ss >> s2;
cout << s2<<' ';
s1 = "bbbbb";
ss.str(s1);
ss >> s2;
cout << s2;

Here the output is

aaaaa aaaaa

I expected

aaaaa bbbbb

The weird thing is it works just fine in this case

stringstream ss;
string s1,s2;

s1 = "aaaaa ccc";
ss.str(s1);
ss >> s2;
cout << s2<<' ';
s1 = "bbbbb";
ss.str(s1);
ss >> s2;
cout << s2;

Here the output is as expected;

aaaaa bbbbb

Can Someone please help me with why is this happeneng and how can i bypss this problem.

[seeplus]

#include <iostream>
#include <sstream>
using namespace std;

int main() {
	string s1 {"aaaaa"}, s2;
	stringstream ss(s1);

	ss >> s2;
	cout << s2 << ' ';

	ss.clear();

	s1 = "bbbbb";
	ss.str(s1);

	ss >> s2;
	cout << s2 << '\n';
}

Note L12. a stringstream is a stream so it has the same states of eof, bad, fail etc. If the stream is not good, then the state has to be reset the same as you would with a file stream.

aaaaa bbbbb

The second example works because the extraction doesn't set eof the way the first example does.

[kalahan]

Thanks for the fast reply that was really helpful! Much appreciated!!!