Homework Help for Linked List

[tay1392]

Hello everyone,

I'm having an odd problem. It's really bugging me that something so small is keeping me from making progress on the rest of my program so I thought that I'd ask for help here!

When I am trying to create a Node to add into my linked list of "Songs", I simply ask the user to enter their information into two temporary string variables.

The problem is...It just skips right over the getline statements and I can't get any input

Here's the "Add song" function where I am having trouble.

any help would be appreciated, thank you!

void AddSong(Node *& head, Node * nn)
{
	Music a_song;   // temp struct to create a new song node
	string temp_artist;
	string temp_title;

	cout << "Enter Song's artist: ";
	getline(cin, temp_artist);       // skips this statement
	
	cout << "Enter song's title: ";
	getline (cin, temp_title);     // and this one!
	
        a_song.artist = temp_artist;
        a_song.title = temp_title;

	nn = CreateNode(a_song);
	InsertOrdered(head, nn);
}

[LB]

It may be that a previous input operation has placed std::cin in an error state. Try putting cin.clear(); before asking for input; this clears the error state and allows std::cin to try again.

[tay1392]

Thanks L B. adding the cin.clear(); alone didn't fix it, but it did help me remember this piece of code:

	cout << "Enter song's title: ";
	cin.ignore( cin.rdbuf()->in_avail());
	getline (cin, temp_title);
	cin.clear();
	cin.ignore( cin.rdbuf()->in_avail());

and it works now... weird, but oh well.

[LB]

Ah, that means you had left-over input that hadn't been processed by previous input statements. I think cin.sync() usually fixes it.

[cire]

Relying on the behavior of cin.sync() is not portable.

[LB]

http://www.cplusplus.com/forum/general/63860/
Yep. I don't deal with std::cin much, so I tend to forget. Sorry!