getline help

[darkstarskb]

My program is having a problem with getline. It seems to skip over random getlines i have in my program. And sometimes outputs will be skipped. For instance, in the following code, it displays the first cout, then skips the getline (meaning it will go right to the if-else with no input), displays the correct or incorrect (always incorrect because the getline didnt work), and then skips the last cout. I have no idea what could be causing this.

cout<<word[randomNum[b]]<<endl;
getline(cin, guess);


if(guess == definition[randomNum[b]])
cout<<"Correct"<<endl;
else
cout<<"Incorrect"<<endl;

cout<<definition[randomNum[b]];



The weird part is, if i do this:

cout<<word[randomNum[b]]<<endl;
getline(cin, guess);
getline(cin, guess);

it will read the input.

[dcjr84]

Can I take a wild guess at this...

Do you use cin >> someVariable somewhere before you do the getline()?

I am willing to bet that you do.

If so, this is the problem.

To fix it, you need to add a cin.ignore() statement to your code before the getline() to consume the '\n' newline character (or any other extra characters) left in the input stream by the >> stream extractor.

Try this...

cout<<word[randomNum[b]]<<endl;
cin.ignore(100, '\n');
getline(cin, guess);

[darkstarskb]

That was it thanks a lot.

[SuperKoko]

My program is having a problem with getline. It seems to skip over random getlines i have in my program. And sometimes outputs will be skipped. For instance, in the following code, it displays the first cout, then skips the getline (meaning it will go right to the if-else with no input), displays the correct or incorrect (always incorrect because the getline didnt work), and then skips the last cout. I have no idea what could be causing this.

dcjr84 understood your problem thanks to his psychic powers, but you haven't shown us the code having the problem.
You probably do things such as:

std::cin >> a_variable; // doesn't read a complete line, but stops on the first whitespace character.

But you've not shown that in your code sample.
Next time, when you ask a question, you should post a compilable piece of code reproducing the problem.