Clear Input Stream

[joatmon]

I know that this question has been asked and answered a million times, but I'm just not handling it correctly. I need to solicit a user response, execute a bunch of code, then return to the start of the loop and solicit another response. Before reiterating, I need to clear the cin stream so that the next response is captured correctly. This is my code. I thought that I was handling this, but I'm not.

int main()
{
    string response;
    bool run_again = true;

    while (run_again)
    {
        cout << "Enter something" << endl;
        cin.get();
        getline(cin, response);
        
        //switch statement using response

        cin.clear();
        cin.ignore();
    }
}

Anybody see what I am doing wrong? How do I simply reset cin, so that it has no value when the loop reiterates?

Thanks.

[manasij7479]

Put

cin.ignore(numeric_limits<streamsize>::max(),'\n');

in place of cin.ignore();
No need of clear();

[joatmon]

Thanks. This seems to work, but it has one problem. It seems to make the program pause until the enter key is pressed. It looks to the user like the program has crashed. I don't want the program to pause, I just want the cin stream to be reset, so that it is free to accept user input like it did on the very first iteration. What else should I do? Thanks.

[DSLq5Di1]

http://www.cplusplus.com/reference/iostream/istream/sync/

    while (run_again)
    {
        cout << "Enter something" << endl;
        cin.get();

        cin.sync(); // clear the input buffer
        getline(cin, response);
        
        //switch statement using response

        cin.clear();
        cin.ignore();
    }

[joatmon]

That seems to work Thanks as always!