stringstream

Question

would anyone explain to me why the following code returns "Helloworld!world!"

string example="Hello world!",temp;
stringstream mystr(example);
while (mystr){
mystr>>temp;
cout <<temp;
}

but this one returns "Helloworld!", assuming that the sstream and string files are included??

string example="Hello world!";
stringstream mystr(example);
while (mystr){
string temp;
mystr>>temp;
cout <<temp;
}

Answer 1

Check the "good" attribute to see if the stream is good for extraction:

while(mystr.good())
{
// your code here
}

Or alternatively, check if extraction went well in the loop:

while(mystr >> temp)
{
// your code here
}

Hth, cmiiw